CN2138296Y

CN2138296Y - Multifunctional pressure meter

Info

Publication number: CN2138296Y
Application number: CN 92230066
Authority: CN
Inventors: 施昭超
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-08
Filing date: 1992-08-08
Publication date: 1993-07-14
Anticipated expiration: 2002-08-08

Abstract

The utility model provides a multifunctional pressure meter which can measure and indicate air pressure, high pressure alarm and low pressure alarm, the multifunctional pressure meter can predetermine the alarm, and the high pressure and the low pressure of the multifunctional pressure meter can be adjusted. Matched with a high and low pressure automatic controller matched with the multifunctional pressure meter, the multifunctional pressure meter has the functions of the automatically control of the high pressure and the low pressure. The sub-finger of the pressure meter, a low pressure adjustment wheel provided with an adjustment finger, a high pressure adjustment wheel with an adjustmentfinger, a low pressure control circuit board, a high pressure control reed pipe circuit board, a small magnet, a photoacoustic alarm post head, a self-control signal post head, etc. are added on a common spring pipe type pressure meter. When the air pressure is below or above the rated low pressure point and the rated high pressure point, the multifunctional pressure meter can make an alarm timely. The multifunctional pressure meter is used together with a high pressure and low pressure automatic controller matched with the multifunctional pressure meter, the multifunctional pressure meter can timely switch on or switch off a combustion supporting circuit. The pressure is recovered normally, and the accident rate that superpressure explodes or low pressure can not be normally operated.

Description

Multifunctional pressure meter

The utility model relates to the multi-purpose pressure meter of a kind of measurement gas or fluid pressure.

Common spring cast rain glass utilizes the flexible drive pointer rotation of spring tube bending, and the indicated pressure value can not play low pressure or high pressure are carried out the effect of control automatically of dual regulation, warning and pressure.Application number 85203480(GG85203480) patent disclosure a kind of low pressure sound and light alarm rain glass, it is to have increased a low pressure detector switch and sound light alarming circuit on ball reed pipe type tensimeter, and a light emitting diode and a toot device etc., realized air pressure is lower than warning when limiting numerical value, but the automatic control problem of pressure did not propose solution when it was in abnormal working position for the UHV (ultra-high voltage) warning problem that easily causes an explosion accident and air pressure, and height pressure predetermined adjustment is also inconvenient.

The purpose of this utility model is exactly to design a kind of can the realization high-low pressure is reported to the police at above-mentioned existing manometric defective, be equipped with the high-low pressure self-actuated controller, can also realize the automatic control function of high-low pressure, and the predetermined all adjustable multi-purpose pressure meter of high-low pressure value of reporting to the police and controlling automatically.

Technical solution of the present utility model is: below the barometric dial plate of ball reed pipe type, the secondary pointer of the tensimeter that is synchronized with the movement with owner pointer is housed under the tensimeter owner pointer, is associated with a permanent magnet and a low voltage control on the secondary pointer of tensimeter and dials and collude; Low pressure regulating wheel and high voltage adjusting wheel are fixed on the regulating shaft fixed head by low pressure adjusting main shaft and high voltage adjusting main shaft respectively, and low pressure is regulated and connected firmly low pressure adjusting pointer and high voltage adjusting pointer on main shaft and the high voltage adjusting main shaft respectively; Low pressure is regulated on the pointer and is had the low-voltage control circuit plate, has high voltage control reed switch circuit plate on the high voltage adjusting pointer; Be associated with an audible-visual annunciator and audible-visual annunciator power-line terminal and high-low pressure automatic control signal binding post on the watchcase, the high-low pressure automatic control signal from be input to here with the supporting high-low pressure self-actuated controller of the utility model, thereby reach automatic control function.

Low-voltage control circuit plate of the present utility model is made up of two parts, and low pressure sound and light alarm part is made up of low pressure sound and light alarm tongue tube, connects with audible-visual annunciator with lead; Low pressure automatic control auxiliary circuit part is colluded type contact iron pin and can be regulated the miniature iron pin composition that contacts of low pressure of main axis rotation around low pressure by permanent magnet, connects with high-low pressure automatic control signal binding post with lead.

High voltage control reed switch circuit plate of the present utility model also is made up of two parts, and high pressure sound and light alarm part is made up of high pressure sound and light alarm tongue tube, connects with audible-visual annunciator with lead; Pressure self-controlled auxiliary circuit part is controlled tongue tube automatically by high pressure and is formed, and the usefulness lead connects with high-low pressure automatic control signal binding post.

The utility model has increased secondary pointer on the barometric basis of existing spring, high and low pressure control circuit board, audible-visual annunciator, and the high and low pressure regulating wheel, thus realized the sound and light alarm of high-low pressure, and predetermined high-low pressure value of reporting to the police is adjustable.If be equipped with the high-low pressure self-actuated controller supporting, also can realize automatic control, thereby can prevent because blast of boiler superpressure or the abnormal accident of operating on low voltage take place staff's carelessness to high-low pressure with this table.Also have simultaneously simple in structure, advantage such as cost is low, and volume is little, and is highly sensitive, and purposes is wide.

The utility model further specifies below in conjunction with accompanying drawing.

Fig. 1 multi-purpose pressure meter structural representation;

Fig. 2 C-C cut-open view;

Fig. 3 high-low pressure sound and light alarm, control wiring diagram automatically;

Fig. 4 low pressure regulating wheel enlarged drawing

The vertical view of Fig. 5 Fig. 4;

Fig. 6 multi-purpose pressure meter profile front view;

Fig. 7 multi-purpose pressure meter rear view and partial cutaway;

Fig. 8 self-actuated controller circuit theory diagrams;

Among the figure: 1-boiler induced-draft fan motor, 2-audible-visual annunciator power-line terminal, the little permanent magnet of 3-, 4-colludes type contact iron pin, 5-connects lead, 6-low-voltage control circuit plate, 7-low pressure sound and light alarm tongue tube, the 8-audible-visual annunciator, 9-high voltage control reed switch circuit plate, 10-high pressure sound and light alarm tongue tube, the 11-high pressure is controlled tongue tube automatically, 12-high-low pressure automatic control signal binding post, 13-tensimeter air intake opening, 14-tensimeter bonnet fixing threaded hole, 15-tensimeter main shaft fixed head, the 16-permanent magnet, the 17-low voltage control is dialled and is colluded, the secondary pointer of 18-tensimeter, 19-low pressure regulating wheel, 20-low pressure is regulated pointer, the miniature contact iron of 21-low pressure pin, 22-high voltage adjusting pointer, 23-high voltage adjusting wheel, 24-main shaft fixed supported slab, 25-main shaft pinion wheel, the 26-sector gear, 27-main shaft fixation clip, the 28-spring tube bending, 29-kinematic link bolt, the 30-connecting rod, 31-main shaft set bolt (2), the activity centre axle of 32-sector gear 26,33-multi-purpose pressure meter watchcase, 34-tensimeter threaded connector, 35-tensimeter owner pointer, 36-tensimeter dial plate, 37-tensimeter main shaft, 38-low pressure is regulated main shaft, 39-regulating shaft fixed head, 40-regulating shaft fixation clip, 44-low pressure is regulated indication window, 45-high voltage adjusting indication window, 46-tensimeter bonnet gib screw (3), 47-high-low pressure self-actuated controller.

Principle of work of the present utility model is as follows: referring to Fig. 1, after boiler put into operation, vapour pressure began slowly to rise, behind the generation pressure, spring tube bending 28 produces outside motion because of pressurized, does circular motion thereby drive sector gear 26 by bolt 29 and kinematic link 30 around activity centre axle 32.Vapour pressure rises, and sector gear 26 moves counterclockwise, on the contrary then motion clockwise.The main shaft pinion wheel 25 that is connected as a single entity with main shaft 37 is meshed with sector gear 26, so sector gear 26 moves counterclockwise, then main shaft 37 clockwise rotates, tensimeter owner pointer 35 on it and being positioned at below the dial plate 36, secondary pointer 18(under the owner pointer 35 is with reference to figure 2) also clockwise rotate the direction that the indicated pressure value increases simultaneously.Otherwise, two then motions counterclockwise of pointer, the direction that the indicated pressure value reduces.

Low pressure is regulated pointer 20 and is pointed to the A point, and high voltage adjusting pointer 22 points to the B point, respectively predetermined low pressure and the high-voltage value of representative.When vapour pressure rose to the A point, secondary pointer 18 was just regulated pointer 20 with low pressure and is overlapped.The miniature contact iron of low pressure pin 21 can be regulated main shaft 38 around low pressure and rotate, it is dialled normal condition by the low voltage control on the secondary pointer 18 always and colludes 17 grades and dialling the bottom collude, when secondary pointer 18 rises to A point and low pressure and regulates pointer 20 and overlap with vapour pressure, the miniature iron pin 21 that touches of low pressure also overlaps with low pressure adjusting pointer 20, thereby connect the low pressure automatic control auxiliary circuit of low-voltage control circuit plate 6, the A end of high-low pressure automatic control signal binding post 12 is then exported high level (with reference to figure 3, annotate: circuit is connected and is high level, be broken as low level), simultaneously, low pressure sound and light alarm tongue tube 7 is also connected because of the adhesive that is subjected to permanent magnet 16 on the secondary pointer 18, makes audible-visual annunciator send low pressure sound and light alarm signal.When vapour pressure continues to rise to the B point, the miniature contact iron of low pressure pin 21 is colluded the restriction of type contact iron pin 4 and is stayed the original place, keep low pressure automatic control auxiliary circuit to connect, and secondary pointer 18 overlaps with high voltage adjusting pointer 22, by the effect of permanent magnet 16 thereon, make high pressure

control tongue tube

11 and 10 connections of adhesives simultaneously of high pressure sound and light alarm tongue tube automatically.At this moment, the B of high-low pressure automatic control signal binding post 12 end is also exported high level, by the effect of high-low pressure self-actuated controller 47, can cut off the circuit of combustion-supporting equipment such as induced draft fan automatically, pressure is reduced, also send high pressure sound and light alarm signal simultaneously, remind the fireman to arouse attention.When vapour pressure slowly drops to the A point again, permanent magnet 16 makes 7 adhesives of low pressure sound and light alarm tongue tube again, send visual alarm in a low voice, remind the fireman, vapour pressure has dropped to predetermined low voltage value, carry out operation preliminary work, when vapour pressure is lower than the A point when following slightly, low voltage control on the secondary pointer 18 of tensimeter is dialled and is colluded 17 the miniature contact iron of low pressure pin 21 pushed aside, causes miniature 21 disconnections of iron pin, the low pressure automatic control auxiliary circuit output terminals A output low level of contacting of lead 5 and low pressure, at this moment, combustion-supporting circuit part is connected automatically, and induced draft fan is started, and puts into operation once more.So repeat said process.

Predetermined low voltage value of reporting to the police of the utility model and high-voltage value can be regulated by high-low

pressure regulating wheel

23 and 19 respectively.The optimum position that the high-low pressure regulating wheel is installed be both 90 ° each other, low pressure regulating wheel 19 is positioned at air intake 13 to be counted, on the axis of clockwise 1/4 dial plate.As Fig. 4, Fig. 5, can low pressure be regulated pointer 20 fix on the suitable minimum work pressure limiting point A by rotating low pressure regulating wheel 19, on the tensimeter, this value is regulated indication window 44 by Fig. 6 mesolow and is shown.It is identical that high voltage adjusting is taken turns 23 structures, no longer stops and state.

With the circuit theory diagrams of the supporting high-low pressure self-actuated controller 47 of the utility model as shown in Figure 8, the utility model and this controller cooperate, and can realize Boiler Steam low pressure and UHV (ultra-high voltage) are carried out dual control.A, B connect the high-low pressure automatic control signal binding post 12 of multi-purpose pressure meter among the figure.A is a low pressure automatic control signal input part, and B is pressure self-controlled signal input part, G ₁Be two input end Sheffer stroke gates, G2 is a phase inverter, D ₃Be isolating diode, G ₁, G ₂, D ₃Form the vapour pressure holding circuit.Triode T1, T ₂Be complex pipe, play on-off action, diode D ₁, D ₂Play a part every traffic straight, D ₄Be commutation diode, C is a filter capacitor, R ₁, R ₂, R ₃Be biasing resistor, J is a relay, and JC is a contactor, and QA, TA are for starting and stop button K ₁For high pressure keeps autocontrol switch, K ₂Be manual, automatic selector switch.

This high-low pressure self-actuated controller is work like this: 1〉when Boiler Steam is zero (or low pressure), G ₁Input end A, B be low level, output terminal F ₁Be high level, triode conducting, relay and contactor adhesive, induced draft fan running (at this moment the fireman starts fan blower and fire grate according to actual conditions).2〉when vapour pressure rises to the A point, A is a high level, and B still is a low level, F ₁Still be high level, air inducing, fan blower remain in operation.3〉when vapour pressure rises to the B point, A, B end is high level, G ₁Upset, F ₁Be low level, triode ends, air inducing, fan blower are out of service automatically, this moment, secondary pointer just in time overlapped with the high voltage adjusting pin, two tongue tubes (10,11 alarm for high voltage, high pressure are controlled automatically) adhesive is connected, send the sound and light alarm signal simultaneously, at this moment, the fireman hears the running that can stop fire grate after the warning as the case may be.G ₂Output terminal is a high level.4〉when vapour pressure is lower than the B point, G ₂The high level of output terminal feeds back to the B end, and circuit is realized self-locking, F ₁Be low level still, induced draft fan is stall still.When 5〉under vapour pressure continues, being reduced to the A point, G ₁Upset once more, F ₁Become high level, the induced draft fan running, (this moment, secondary pointer and low pressure were regulated hands coincide to send the sound and light alarm signal simultaneously, because the effect of permanent magnet 16, make tongue tube 7(low pressure sound and light alarm) the adhesive connection), after the fireman hears warning, can start fan blower and fire grate normal operation input as the case may be.So repeat the above-mentioned course of work.

Claims

1, a kind of on ball reed pipe type rain glass basis improved multi-purpose pressure meter, it comprises watchcase 33, tensimeter main shaft 37, main shaft fixed head 15, connect firmly the spring tube bending 28 on the main shaft fixed head 15, tensimeter air intake 13, sector gear 26, the connecting rod 30 that connects spring tube bending 28 and sector gear 26, main shaft pinion wheel 25 and dial plate 36 with sector gear 26 engagements, tensimeter owner pointer 35, feature of the present invention is: below the dial plate 36, the secondary pointer 18 of the tensimeter that is synchronized with the movement with owner pointer 35 is arranged under the owner pointer 35, be associated with a permanent magnet 16 and a low voltage control on the secondary pointer 18 of tensimeter and dial and collude 17; Low pressure regulating wheel 19 and high voltage adjusting wheel 23 are fixed on the regulating shaft fixed head 39 by low pressure adjusting main shaft 38 and high voltage adjusting main shaft 41 respectively, and low pressure is regulated and connected firmly low pressure adjusting pointer 20 and high voltage adjusting pointer 22 on main shaft 38 and the high voltage adjusting main shaft 41 respectively; Low pressure is regulated on the pointer 20 and is had low-voltage control circuit plate 6, has high voltage control reed switch circuit plate 9 on the high voltage adjusting pointer 22; Watchcase 33 first line of a couplet have audible-visual annunciator 8 and audible-visual annunciator power-line terminal 2 and high-low pressure automatic control signal binding post 12.

2, multi-purpose pressure meter according to claim 1 is characterized in that: low-voltage control circuit plate 6 is made up of two parts: low pressure sound light alarming circuit part is made up of low pressure sound and light alarm tongue tube 7, and the usefulness lead connects with audible-visual annunciator 8; Low pressure automatic control auxiliary circuit part is colluded type contact iron pin 4 and miniature iron pin 21 compositions that contact of low pressure that can regulate main shaft 38 rotations around low pressure by permanent magnet 3, connects with lead and high-low pressure automatic control signal binding post 12.

3, according to right 1 or 2 described multi-purpose pressure meters, it is characterized in that: high voltage control reed switch circuit plate 9 is made up of two parts: high pressure sound and light alarm part is made up of high pressure sound and light alarm tongue tube 10, and the usefulness lead connects with audible-visual annunciator 8; Pressure self-controlled auxiliary circuit part is controlled tongue tube 11 automatically by high pressure and is formed, and the usefulness lead connects with high-low pressure automatic control signal binding post 12.

4, multi-purpose pressure meter according to claim 1 and 2 is characterized in that low pressure regulating wheel 19 is positioned at air intake opening 13 and counts, on the axis of clockwise 1/4 dial plate, high voltage adjusting wheel 23 with its 90 ° each other.

5, multi-purpose pressure meter according to claim 3 is characterized in that low pressure regulating wheel 19 is positioned at air intake opening 13 and counts, on the axis of clockwise 1/4 dial plate, high voltage adjusting wheel 23 with its 90 ° each other.

6, multi-purpose pressure meter according to claim 1 and 2 is characterized in that on the dial plate 36, respectively with high and low pressure regulating wheel 23 and 19 corresponding positions on, have high voltage adjusting indication window 45 and low pressure to regulate indication window 44.

7, multi-purpose pressure meter according to claim 3 is characterized in that on the dial plate 36, respectively with high and low pressure regulating wheel 23 and 19 corresponding positions on, have high voltage adjusting indication window 45 and low pressure to regulate indication window 44.

8, multi-purpose pressure meter according to claim 4 is characterized in that on the dial plate 36, respectively with high and low pressure regulating wheel 23 and 19 corresponding positions on, have high voltage adjusting indication window 45 and low pressure to regulate indication window 44.

9, multi-purpose pressure meter according to claim 5 is characterized in that on the dial plate 36, respectively with high and low pressure regulating wheel 23 and 19 corresponding positions on, have high voltage adjusting indication window 45 and low pressure to regulate indication window 44.