CN211719484U - Force applying mechanism for gas density checking relay - Google Patents
Force applying mechanism for gas density checking relay Download PDFInfo
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- CN211719484U CN211719484U CN202020687336.0U CN202020687336U CN211719484U CN 211719484 U CN211719484 U CN 211719484U CN 202020687336 U CN202020687336 U CN 202020687336U CN 211719484 U CN211719484 U CN 211719484U
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Abstract
The utility model provides an apply power mechanism for check-up gas density relay, including application of force mechanism and motion, motion sets up with gas density relay's signal adjustment mechanism relatively, the drive of application of force mechanism motion is linear motion to apply the effort to gas density relay's signal adjustment mechanism, signal adjustment mechanism take place the displacement, make gas density relay take place to report to the police and/or block the contact signal action, realized the online check-up to gas density relay, need not maintainer and just can accomplish the check-up to the scene, improved the reliability and the efficiency of electric wire netting greatly, reduced the operation maintenance cost.
Description
Technical Field
The utility model relates to an electric power tech field, concretely relates to use and be used for check-up gas density relay's application power mechanism on high pressure, middling pressure electrical equipment.
Background
With the development of the unattended transformer substation towards networking and digitalization and the continuous enhancement of the requirements on remote control and remote measurement, the online monitoring method has important practical significance on the gas density and micro-water content state of SF6 electrical equipment. With the continuous and vigorous development of the intelligent power grid in China, intelligent high-voltage electrical equipment is used as an important component and a key node of an intelligent substation, and plays a significant role in improving the safety of the intelligent power grid. At present, most of high-voltage electrical equipment is SF6 gas insulation equipment, and if the gas density is reduced (caused by leakage and the like), the electrical performance of the equipment is seriously influenced, and serious hidden danger is caused to safe operation. At present, the online monitoring of the gas density value in the SF6 high-voltage electrical equipment is very common, and therefore, the application of the gas density monitoring system (gas density relay) is developed vigorously. Whereas current gas density monitoring systems (gas density relays) are basically: 1) the remote transmission type SF6 gas density relay is used for realizing the acquisition and uploading of density, pressure and temperature and realizing the online monitoring of the gas density; 2) the gas density transmitter is used for realizing the acquisition and uploading of density, pressure and temperature and realizing the online monitoring of the gas density. The SF6 gas density relay is the core and key component.
The periodic inspection of the gas density relay on the electrical equipment is a necessary measure for preventing the trouble in the bud and ensuring the safe and reliable operation of the electrical equipment. The 'electric power preventive test regulations' and the 'twenty-five key requirements for preventing serious accidents in electric power production' both require that the gas density relay be periodically checked. From the actual operation condition, the periodic verification of the gas density relay is one of the necessary means for ensuring the safe and reliable operation of the power equipment. Therefore, the calibration of the gas density relay has been regarded and popularized in the power system, and various power supply companies, power plants and large-scale industrial and mining enterprises have been implemented. However, power supply companies, power plants, and large-scale industrial and mining enterprises need to equip testers, equipment vehicles, and high-value SF6 gas for completing field calibration and detection of the gas density relay, including power failure and business loss during detection, and the detection cost per year of each high-voltage switch station is roughly calculated to be about tens of thousands to tens of thousands yuan. In addition, if the field check of the detection personnel is not standard in operation, potential safety hazards also exist. Therefore, it is necessary to innovate the existing gas density self-checking gas density relay, especially the gas density on-line self-checking gas density relay or system, so that the gas density relay for realizing the on-line gas density monitoring or the monitoring system formed by the gas density relay also has the checking function of the gas density relay, and then the regular checking work of the (mechanical) gas density relay is completed, and no maintenance personnel is needed to arrive at the site, so as to improve the working efficiency and reduce the operation and maintenance cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an use applying force mechanism that is used for check-up gas density relay on high pressure, middling pressure electrical equipment for make gas density relay's signal adjustment mechanism take place the displacement, make gas density relay take place the contact signal action, accomplish the online check-up to gas density relay, raise the efficiency, reduce the operation maintenance cost, guarantee electric wire netting safe operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an apply force mechanism for a calibration gas density relay, comprising: the gas density relay comprises a force application mechanism and a movement mechanism, wherein the movement mechanism is arranged opposite to a signal adjusting mechanism of the gas density relay, the force application mechanism drives the movement mechanism to do linear movement, so that an acting force is applied to the signal adjusting mechanism of the gas density relay, the signal adjusting mechanism displaces, and a contact signal action is generated on the gas density relay, and the contact signal comprises an alarm and/or a lock; wherein,
the force application mechanism comprises a driving part and a force transmission part, and the force transmission part is driven by the driving part to rotate or move along a straight line;
the motion mechanism comprises a push rod, a fixing piece is arranged at one end, close to the force transmission piece, of the push rod, and one end, far away from the force transmission piece, of the push rod penetrates through a fixing frame and extends to the lower portion of the fixing frame.
Preferably, the driving component comprises one of a magnetic force, gravity, a motor, an electric push rod motor, a stepping motor, a reciprocating mechanism, a carnot cycle mechanism, an air compressor, a deflation valve, a pressure making pump, a booster valve, an electric air pump, an electromagnetic air pump, a pneumatic element, a magnetic coupling thrust mechanism, a heating thrust generation mechanism, an electric heating thrust generation mechanism and a chemical reaction thrust generation mechanism.
Preferably, the force transfer member comprises one of a cam, a connecting rod, a spring, a metallic member, a non-metallic member, a telescoping member, and a non-telescoping member.
Preferably, the fixing frame is provided with a guide hole which is vertically communicated and used for the push rod to pass through, and the inner diameter of the guide hole is larger than the outer diameter of the push rod.
Preferably, the fixing piece and the push rod between the fixing frames are sleeved with a return spring, one end of the return spring is fixedly connected with the fixing piece, and the other end of the return spring is fixedly connected with the fixing frames.
More preferably, in an unstressed state, the return spring is in a natural extension state, and a part of the push rod extending out of the lower part of the fixing frame is positioned above a signal adjusting mechanism of the gas density relay and is not in contact with the upper end face of the signal adjusting mechanism.
More preferably, the force transmission piece is a cam, an end face of the cam, which is opposite to the convex part of the cam, is in contact with one end of the push rod, which is provided with a fixing piece, and the return spring is in a natural extension state; the driving part drives the cam to rotate, the protruding part of the cam strikes the push rod to drive the push rod to move along the axial direction of the push rod, and when the protruding part of the cam leaves the end, provided with the fixing part, of the push rod, the push rod resets under the elastic action of the reset spring.
Preferably, the force applying mechanism further comprises a load cell, wherein the load cell is directly connected with the push rod, or the load cell is connected with the push rod through a contact piece.
More preferably, the load cell is arranged at one end of the push rod, where the fixing part is arranged, or the load cell is arranged at one end of the push rod, where the push rod penetrates through the fixing frame.
More preferably, the load cell comprises one of a gravity sensor, a pressure sensor, a magnetic sensor, a displacement sensor, a deformation sensor, a photoelectric sensor, an angle sensor, and a camera.
Preferably, the acting force applying mechanism is arranged in a shell of the gas density relay, the fixing frame is arranged above a signal adjusting mechanism of the gas density relay, and two sides of the fixing frame are fixedly connected with the inner wall of the shell of the gas density relay.
Preferably, the acting force applying mechanism is arranged outside a shell of the gas density relay, the fixing frame is fixed on the shell of the gas density relay, a push rod of the acting force applying mechanism extends into the shell through an air hole in the shell and is in sealing contact with the inner wall of the shell, and the end part of the push rod extends into the shell and a signal adjusting mechanism in the shell.
More preferably, the push rod is in sealing contact with the inner wall of the housing through a seal.
More preferably, the force applying mechanism is disposed in a cavity or a housing having an opening, the fixing frame is fixedly connected to the cavity or the housing, and the push rod passes through one end of the fixing frame and extends out of the opening.
Preferably, the signal adjusting mechanism comprises a movable rod which can generate displacement along with the thrust direction of the push rod; one end of the moving rod, which faces the push rod, is fixedly connected with a cross rod (or a plate), two ends of the cross rod (or the plate) are provided with adjusting screws, and the adjusting screws are used for triggering a signal generator which is arranged in the gas density relay and is opposite to the adjusting screws under the driving force when the moving rod displaces.
More preferably, the signal generator comprises a microswitch or a magnetic assisted electric contact, and the gas density relay outputs a contact signal through the signal generator.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
the utility model provides an apply power mechanism for check-up gas density relay, including application of force mechanism and motion, motion sets up with gas density relay's signal adjustment mechanism relatively, the drive of application of force mechanism motion is linear motion to apply the effort to gas density relay's signal adjustment mechanism, signal adjustment mechanism take place the displacement, make gas density relay take place to report to the police and/or block the contact signal action, realized the online check-up to gas density relay, need not maintainer to just can accomplish the check-up to the scene, improved the reliability and the efficiency of electric wire netting greatly, reduced the operation maintenance cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a first mechanism for applying a force according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a force applying mechanism disposed in a gas density relay according to a first preferred embodiment of the present invention.
Fig. 3 is a schematic structural view of a second preferred embodiment of the present invention.
Detailed Description
The utility model provides a exert power mechanism for check-up gas density relay, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the drawing and lifts the example the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The first embodiment is as follows:
fig. 1 is a schematic view of a mechanism for applying a force. As shown in fig. 1, an applying force mechanism for a gas density verification relay includes: the gas density relay comprises a force application mechanism and a movement mechanism, wherein the movement mechanism is arranged opposite to a signal adjusting mechanism of the gas density relay, and the force application mechanism drives the movement mechanism to do linear movement, so that acting force is applied to the signal adjusting mechanism of the gas density relay, the signal adjusting mechanism displaces, and the gas density relay generates contact signals to act, and the contact signals comprise alarm and/or locking.
The force application mechanism 15 comprises a driving part 151 and a force transmission piece 152, wherein the force transmission piece 152 rotates under the driving of the driving part 151; the movement mechanism comprises a push rod 153, a fixing piece 156 is arranged at one end of the push rod 153 close to the force transmission piece 152, a fixing frame 155 penetrates through one end of the push rod 153 far away from the force transmission piece 152, a guide hole which is penetrated up and down and used for the push rod 153 to penetrate is arranged on the fixing frame 155, the inner diameter of the guide hole is larger than the outer diameter of the push rod 153, and one end of the push rod 153 far away from the force transmission piece 152 penetrates through the guide hole and extends to the lower part of the fixing frame 155.
Specifically, the driving member 151 is a motor, and the force-transmitting member 152 is a cam, which is driven by the motor to rotate. The motor-driven cam rotating specific modes are numerous, for example, a rotating shaft is connected between two supporting plates through a bearing, the cam is arranged between the two supporting plates through the rotating shaft, the output shaft of the motor is fixedly connected with one end of the rotating shaft, and when the motor rotates, the rotating shaft is driven to rotate, so that the cam fixedly installed on the rotating shaft is driven to rotate. For example, a rotatable rotating shaft is arranged above the push rod, the cam and a gearwheel are coaxially and fixedly arranged on the rotating shaft, a pinion is fixedly arranged on an output shaft of the motor and meshed with the gearwheel, and when the motor rotates, the pinion is driven to rotate, and the gearwheel rotates along with the pinion to drive the rotating shaft for mounting the gearwheel to rotate, so that the cam fixedly arranged on the rotating shaft is driven to rotate.
A return spring 154 is sleeved on the push rod 153 between the fixing member 156 and the fixing frame 155, one end of the return spring 154 is fixedly connected with the fixing member 156, and the other end is fixedly connected with the fixing frame 155. When the push rod 153 is in an unstressed state, the end face of the cam opposite to the convex part of the cam is in contact with one end of the push rod 153 provided with the fixing part 156, the return spring (or the return elastic part) 154 is in a natural extension state, and the part of the push rod 153 extending out of the lower part of the fixing frame 155 is positioned above the signal adjusting mechanism of the gas density relay and is not in contact with the upper end face of the signal adjusting mechanism. When the motor drives the cam to rotate, the convex part of the cam strikes the push rod 153, the push rod 153 is driven to move along the axial direction of the cam, and when the convex part of the cam leaves the end, provided with the fixing piece 156, of the push rod 153, the push rod 153 is reset under the elastic force of the reset spring 154. The return spring 154 may also be an elastic member having a return function, such as an elastic member made of phosphor copper sheet or manganese steel.
The force applying mechanism further comprises a load cell 16, wherein the load cell 16 is connected with the push rod 153 through a contact member 1501, or the load cell 16 is directly connected with the push rod 153. In this embodiment, the load cell 16 is a displacement sensor or a deformation sensor, and is disposed at one end of the push rod 153 where the fixing member 156 is disposed, and is used for detecting the magnitude of the thrust force applied to the push rod 153.
When the force applying mechanism is used for checking the gas density relay, the force applying mechanism can be arranged in a shell of the gas density relay, the fixing frame 155 is arranged above the signal adjusting mechanism of the gas density relay, and two sides of the fixing frame 155 are fixedly connected with the inner wall of the shell of the gas density relay.
Fig. 2 is a schematic structural view of the force applying mechanism of the present embodiment disposed in the gas density relay. As shown in fig. 2, the gas density relay 1 mainly includes: a housing, a first bellows 104, a second bellows 103, a signal generator (in this embodiment, a microswitch) 102, and a signal adjusting mechanism 101. Wherein a first open end of the first bellows 104 is fixed on the inner wall of the housing, a second open end of the first bellows 104 is connected with the first sealing element 108 in a sealing manner, the inner wall of the first bellows 104, the first sealing element 108 and the inner wall of the housing together enclose a first sealing air chamber G1,the first pressure sensor 2 communicates with the first airtight chamber G1. The first sealed air chamber G1 is communicated with the insulating gas of the electrical equipment 8 through the multi-way connector 9 and the electrical equipment connector 13. A first opening end of the second bellows 103 is connected with the first sealing element 108 in a sealing manner, a second opening port of the second bellows 103 is connected with an inner wall of the housing through a second sealing element 109, an outer wall of the first bellows 104, the first sealing element 108, an outer wall of the second bellows 103, the second sealing element 109 and the inner wall of the housing together enclose a second gas-sealing chamber G2, and the second gas-sealing chamber G2 is filled with a gas with a density value P20BCI.e., the second sealed gas chamber G2 is a temperature compensated standard gas chamber, and the second pressure sensor 4 is disposed in the second sealed gas chamber G2 for detecting the gas pressure in the second sealed gas chamber G2. The inner wall of the second bellows 103, the second sealing member 109 and the inner wall of the housing together enclose a third sealing plenum G3. The signal conditioning mechanism 101 and the signal generator 102 are disposed within the third sealed plenum G3. The signal conditioning mechanism 101 is connected to the first sealing member 108, the signal generator 102 is disposed corresponding to the signal conditioning mechanism 101, and the gas density relay 1 outputs a contact signal through the signal generator 102. In this embodiment, the signal adjusting mechanism 101 includes a moving rod, one end of the moving rod extends into the second bellows 103, is fixedly connected to the first sealing element 108, and moves along with the deformation of the first bellows 104; the other end of the moving rod extends out of the second corrugated pipe 103 and is fixedly connected with a cross rod (or a plate), the cross rod (or the plate) is provided with an adjusting screw 10101, and the adjusting screw 10101 is arranged corresponding to the signal generator 102. The gas density is monitored by the first sealed gas chamber G1 and the second sealed gas chamber G2, and the monitoring of the gas density is realized by combining the signal generator 102, and when the gas density is lower than or/and higher than the set gas density, an alarm or/and a locking joint signal is output by the signal generator 102.
The force applying mechanism is arranged above the signal adjusting mechanism 101 of the gas density relay 1, and is configured to apply force to the signal adjusting mechanism 101 to push the moving rod to move, the balance of the forces of the first sealed gas chamber G1 and the third sealed gas chamber G3 acting on the upper end face of the first bellows 104 is broken, and the first bellows 104 is deformed along with the movement of the moving rod to generate a certain displacement. The moving rod drives the adjusting screw 10101 to touch a button of the signal generator 102, and the signal generator 102 sends out an alarm and locking signal.
When the biasing mechanism is not biased, the push rod 153 is moved away from the movable rod of the signal adjustment mechanism 101 by the return spring 154, and the push rod 153 does not bias the movable rod of the signal adjustment mechanism 101. When the force application mechanism applies force, the push rod 153 is acted by the driving part 151 and the force transmission piece 152, and the acting force F of the push rod 153 on the return spring 154 can be obtained by detecting the deformation quantity of the return spring 154 through the load cell 16 (F is L × N, wherein L is the deformation quantity, mm, and N is the elastic coefficient, kg/mm). During the verification, the force transmission piece 152 is driven by the driving part 151 to rotate, the push rod 153 is pushed to move downwards, and then acting force F is exerted on the spring 154 and the signal adjusting mechanism 101, namely, the driving part 151 exerts acting force on the signal adjusting mechanism 101 through the force transmission piece 152, and the gas density relay 1 generates contact signal action.
The working principle is as follows:
in a non-checking state, the intelligent control unit 7 monitors the gas pressure and the temperature of the electrical equipment according to the first pressure sensor 2 and the temperature sensor 3 to obtain a corresponding pressure value P at 20 DEG C20The gas density values (namely, the gas density values) can be remotely transmitted and monitored on line, namely, the intelligent control unit 7 acquires the gas density values acquired by the first pressure sensor 2 and the temperature sensor 3; or, intelligence accuse unit 7 acquires the pressure value and the temperature value that first pressure sensor 2, temperature sensor 3 gathered accomplish the on-line monitoring of gas density relay to the gas density of the electrical equipment who monitors. At this time, the gas density value of the first sealed gas chamber G1 is greater than the gas density value of the third sealed gas chamber G3, that is, the difference between the gas density value of the first sealed gas chamber G1 and the gas density value of the third sealed gas chamber G3 is greater than a certain set value, as can be seen from fig. 2, there is a corresponding distance between the adjusting screw 10101 of the signal adjusting mechanism 101 and the signal generator 102, and at this time, the adjusting screw 10101 does not contact the signal generator 102, that is, the trigger signal generator 102 is not activated, the signal generator 102 is not activated, and the contact point signal is not output.
When the density relay 1 needs to be verified, the intelligent control unit 7 controls the driving part 151 of the force application mechanism to drive the force transmission part 152 to rotate, the force transmission part 152 rotates to push the push rod 153 to move downwards, and then applies an action force F to the spring 154 and the signal adjusting mechanism 101, namely, the driving part 151 applies the action force F to the moving rod of the signal adjusting mechanism 101 through the force transmission part 152, the pressure of the upper end face of the first corrugated pipe 104 is increased, the first corrugated pipe 104 is driven to move downwards, and deformation occurs. The moving rod is displaced downwards, so that the distance between the adjusting screw 10101 and the signal generator 102 is reduced, when the distance is smaller than a corresponding value, the adjusting screw 10101 of the signal adjusting mechanism 101 contacts the signal generator 102, namely the signal generator 102 is triggered, and the contact of the signal generator 102 acts (is switched on) to send out a corresponding contact signal (alarm or lock). The contact action passes through the on-line checking contact signal sampling unit 6Uploading the pressure value P1 acquired by the first pressure sensor 2 and the temperature value T acquired by the temperature sensor 3 when the contact signal action or switching occurs in the gas density relay 1 and the force F acquired by the force sensor 16 are acquired by the intelligent control unit 7, calculating or converting the pressure value P1 and the temperature value T into a corresponding pressure value P4 according to the force F, and calculating an equivalent gas pressure value P according to the pressure value P1 and the pressure value P4; according to the equivalent gas pressure value P and the gas pressure-temperature characteristic, the equivalent gas pressure value P is converted into a pressure value corresponding to 20 ℃, namely a gas density value P20And completing the online verification of the gas density relay. Or, the intelligent control unit 7 obtains the gas density value P1 collected by the first pressure sensor 2 and the temperature sensor 3 when the gas density relay 1 generates contact signal action or switching20And the force F collected by the load cell 16, combined with the temperature value T collected by the temperature sensor 3, is calculated or converted into a corresponding gas density value P420And according to the gas density value P120And a gas density value P420Calculating to obtain a gas density value P20And completing the online verification of the gas density relay. Further, when the gas density relay 1 generates contact signal operation or switching, the equivalent gas pressure value P is P1-P4; according to the equivalent gas pressure value P and the gas pressure-temperature characteristic, the equivalent gas pressure value P is converted into a pressure value corresponding to 20 ℃, namely a gas density value P20Completing the online calibration of the gas density relay; or when the gas density relay 1 generates contact signal action or switching, the equivalent gas pressure value P is P1-P4M, wherein M is a preset coefficient and is obtained according to the characteristics of the gas density relay; converting into pressure value of 20 deg.C, i.e. gas density value P, according to the equivalent gas pressure value P, temperature value T and gas pressure-temperature characteristic20And completing the online verification of the gas density relay. Alternatively, the gas density value P of the gas density relay 1 may be set when the contact signal is activated or switched20And a gas density value P120、P420The corresponding relation between the gas density values is designed into a data table and is according to the gas density value P120And a gas density value P420Inquiring the data table to obtain the corresponding gas density value P20Completing the online calibration of the gas density relay; or, when the gas density relay 1 generates contact signal action or switching, its gas density value P20The corresponding relations between the gas pressure values P1, P4 and the temperature value T are designed into a data table, and the data table is inquired according to the gas pressure values P1, P4 and the temperature value T to obtain the corresponding gas density value P20And completing the online verification of the gas density relay. The verification is repeated for multiple times (for example, 2 to 3 times), and then the average value of the verification is calculated, so that the verification work of the gas density relay is completed.
Then, the intelligent control unit 7 disconnects the contact sampling circuit of the gas density relay 1, and the contact of the gas density relay 1 is disconnected from the intelligent control unit 7. Through the control circuit of intelligence accuse unit 7 intercommunication gas density relay 1, the density monitoring return circuit of gas density relay 1 normally works, and gas density relay 1 safety monitoring electrical equipment's gas density makes electrical equipment work safe and reliable. Therefore, the online checking work of the gas density relay 1 can be conveniently completed, and the safe operation of the electrical equipment can not be influenced when the gas density relay 1 is checked online.
Example two:
fig. 3 is a schematic structural view of another mechanism for applying a force. The difference between this embodiment and the first embodiment is:
1) the force applying member of this embodiment comprises a driving member 151, a linear driving member 158 and a force transmitting member 159, wherein the linear driving member 158 is driven by the driving member 151 to move linearly, thereby pushing the force transmitting member 159 to move. The force transmitting member 159 is provided with a force applying surface inclined toward the push rod 153, and the force applying surface applies a downward force to the push rod 153 to move the push rod 153 downward.
2) And a load cell 16 connected to the push rod 153 via a contact member 157. The load cell 16 in this embodiment is a gravity sensor, a force sensor or a strain gauge sensor, is disposed at one end of the push rod 153 penetrating through the fixing frame 155, and is configured to detect a magnitude of a force F applied by the force applying mechanism to the signal adjusting mechanism of the gas density relay.
When the biasing mechanism is not biased, the push rod 153 is moved away from the movable rod of the signal adjustment mechanism 101 by the return spring 154, and the push rod 153 does not bias the movable rod of the signal adjustment mechanism 101. When the force application mechanism applies force, the force application member 151 drives the linear driving member 158 to move leftward, which in turn pushes the force transmission member 159 to move leftward, which in turn pushes the push rod 153 to move downward, so that the push rod 153 applies a force F to the upper end surface of the movable rod of the signal adjustment mechanism 101, and the force F is detected by the load cell 16. That is, the driving member 151 applies a force to the movable rod of the signal adjusting mechanism 101 via the force transmitting member 159, and the gas density relay 1 generates a contact signal operation.
Of course, the driving component, the force transmission member, and the force sensor are not limited to the forms listed in the above embodiments, and the driving component may further include a magnetic force, a gravity force, an electric push rod motor, a stepping motor, a reciprocating mechanism, a carnot cycle mechanism, an air compressor, a gas release valve, a pressure generating pump, a booster valve, an electric air pump, an electromagnetic air pump, a pneumatic element, a magnetic coupling thrust mechanism, a heating thrust generating mechanism, an electric heating thrust generating mechanism, or a chemical reaction thrust generating mechanism; the force transmission piece can also comprise a connecting rod, a spring, a metal piece, a non-metal piece, a telescopic piece or a non-telescopic piece and the like; the load cell may also include a pressure sensor, a magnetic sensor, a photoelectric sensor, an angle sensor, or a camera, among others.
In addition, the acting force applying mechanism can also be arranged outside the shell of the gas density relay. Specifically, the force applying mechanism may be disposed on or in a cavity or a housing having an opening, the fixing frame is fixedly connected to the cavity or the housing, and the push rod passes through one end of the fixing frame and extends out of the opening. When the gas density relay is checked, the fixing frame is fixed on a shell of the gas density relay, a push rod of the force applying mechanism passes through a gas hole in the shell and stretches into the shell and is in sealing contact with the inner wall of the shell, and the push rod stretches into the end part of the shell and a signal adjusting mechanism in the shell are arranged oppositely.
Preferably, the force application mechanism drives the movement mechanism to do linear movement. Alternatively, the force applying mechanism drives the moving mechanism to move in an arc. The force measuring sensor is connected with the push rod directly or through a contact piece.
To sum up, the utility model provides an apply power mechanism for check-up gas density relay, including application of force mechanism and motion, motion sets up with gas density relay's signal adjustment mechanism relatively, the application of force mechanism drive linear motion is done to motion to apply the effort to gas density relay's signal adjustment mechanism, signal adjustment mechanism takes place the displacement, makes gas density relay take place to report to the police and/or block the contact signal action, has realized the online check-up to gas density relay, need not maintainer to just can accomplish the check-up to the scene, has improved the reliability and the efficiency of electric wire netting greatly, has reduced the operation maintenance cost.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (11)
1. An applied force mechanism for a calibration gas density relay, comprising: the gas density relay comprises a force application mechanism and a movement mechanism, wherein the movement mechanism is arranged opposite to a signal adjusting mechanism of the gas density relay, the force application mechanism drives the movement mechanism to do linear movement, so that an acting force is applied to the signal adjusting mechanism of the gas density relay, the signal adjusting mechanism displaces, and a contact signal action is generated on the gas density relay, and the contact signal comprises an alarm and/or a lock; wherein,
the force application mechanism comprises a driving part and a force transmission part, and the force transmission part is driven by the driving part to rotate or move along a straight line;
the motion mechanism comprises a push rod, a fixing piece is arranged at one end, close to the force transmission piece, of the push rod, and one end, far away from the force transmission piece, of the push rod penetrates through a fixing frame and extends to the lower portion of the fixing frame.
2. The force applying mechanism for a gas density verification relay of claim 1, wherein: the driving part comprises one of a magnetic force mechanism, a gravity mechanism, a motor, an electric push rod motor, a stepping motor, a reciprocating motion mechanism, a Carnot cycle mechanism, an air compressor, a compressor, an air release valve, a pressure generating pump, a booster valve, an electric air pump, an electromagnetic air pump, a pneumatic element, a magnetic coupling thrust mechanism, a heating thrust generating mechanism, an electric heating thrust generating mechanism and a chemical reaction thrust generating mechanism.
3. The force applying mechanism for a gas density verification relay of claim 1, wherein: the power transmission piece comprises one of a cam, a connecting rod, a spring, a metal piece, a non-metal piece, a telescopic piece and a non-telescopic piece.
4. The force applying mechanism for a gas density verification relay of claim 1, wherein: the fixing frame is provided with a guide hole which is communicated up and down and used for the push rod to pass through, and the inner diameter of the guide hole is larger than the outer diameter of the push rod.
5. The force applying mechanism for a gas density verification relay of claim 1, wherein: the fixing piece and the push rod between the fixing frames are sleeved with a return spring, one end of the return spring is fixedly connected with the fixing piece, and the other end of the return spring is fixedly connected with the fixing frames.
6. The force applying mechanism for a gas density verification relay according to claim 5, wherein: under the unstressed state, the reset spring is in a natural extension state, and the part of the push rod extending out of the lower portion of the fixing frame is located above the signal adjusting mechanism of the gas density relay and is not in contact with the upper end face of the signal adjusting mechanism.
7. The force applying mechanism for a gas density verification relay according to claim 5, wherein: the force transmission piece is a cam, the end face of the cam, which is opposite to the convex part of the cam, is in contact with one end of the push rod, which is provided with a fixing piece, and the return spring is in a natural extension state; the driving part drives the cam to rotate, the protruding part of the cam strikes the push rod to drive the push rod to move along the axial direction of the push rod, and when the protruding part of the cam leaves the end, provided with the fixing part, of the push rod, the push rod resets under the elastic action of the reset spring.
8. The force applying mechanism for a gas density verification relay of claim 1, wherein: the acting force applying mechanism further comprises a force measuring sensor, wherein the force measuring sensor is directly connected with the push rod, or the force measuring sensor is connected with the push rod through a contact piece.
9. The force applying mechanism for a gas density verification relay of claim 8, wherein: the force measuring sensor is arranged at one end of the push rod, which is provided with the fixing part, or the force measuring sensor is arranged at one end of the push rod, which penetrates through the fixing frame.
10. The force applying mechanism for a gas density verification relay of claim 8, wherein: the force measuring sensor comprises one of a gravity sensor, a pressure sensor, a magnetic sensor, a displacement sensor, a deformation sensor, a photoelectric sensor, an angle sensor and a camera.
11. The force applying mechanism for a gas density verification relay of claim 1, wherein: the acting force applying mechanism is arranged in a shell of the gas density relay, the fixing frame is arranged above a signal adjusting mechanism of the gas density relay, and two sides of the fixing frame are fixedly connected with the inner wall of the shell of the gas density relay; or,
the mechanism for applying the acting force is arranged outside a shell of the gas density relay, the fixing frame is fixed on the shell of the gas density relay, a push rod of the mechanism for applying the acting force passes through a gas hole in the shell and stretches into the shell and is in sealing contact with the inner wall of the shell, and the push rod stretches into the end part of the shell and a signal adjusting mechanism in the shell are arranged oppositely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020687336.0U CN211719484U (en) | 2020-04-29 | 2020-04-29 | Force applying mechanism for gas density checking relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020687336.0U CN211719484U (en) | 2020-04-29 | 2020-04-29 | Force applying mechanism for gas density checking relay |
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| CN211719484U true CN211719484U (en) | 2020-10-20 |
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| CN202020687336.0U Active CN211719484U (en) | 2020-04-29 | 2020-04-29 | Force applying mechanism for gas density checking relay |
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