CN211927704U

CN211927704U - Frequency-adjustable digital spectrometer excitation light source

Info

Publication number: CN211927704U
Application number: CN201921429970.8U
Authority: CN
Inventors: 张弛
Original assignee: Guiyang Lites Instrument Co ltd
Current assignee: Guiyang Lites Instrument Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-11-13
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a frequency-adjustable digital spectrometer excitation light source, wherein the output end of a pulse generator is respectively connected with a double-path pulse current generation control circuit and an impulse voltage pulse generator, and the impulse voltage pulse generator is connected with an impulse voltage generation circuit through an isolation circuit I; the impulse voltage generating circuit comprises a first power supply, wherein the first power supply is sequentially connected with a voltage energy accumulator, a pulse forming network impulse voltage generating circuit and a step-up transformer in series; double-circuit impulse current take place control circuit including the isolator circuit No. two that connect in parallel each other, the isolator circuit No. two all establishes ties with pulse formation nature network impulse current generating circuit, pulse formation nature network impulse current generating circuit's input is connected with the power No. two and the electric current energy storage ware of establishing ties each other jointly, pulse formation nature network impulse current generating circuit's output all is connected with the damping diode, the utility model discloses the adjustable number of frequency reaches has comparatively good repeatability.

Description

Frequency-adjustable digital spectrometer excitation light source

Technical Field

The utility model relates to a frequency adjustable digital spectrum appearance excitation light source belongs to spectrum appearance excitation light source technical field.

Background

The spark light source used by the early photoelectric direct-reading spectrometer is a current pulse generator, and the light source has the main problems that the excitation repetition frequency of the light source is low, the frequency is not adjustable, unidirectional pulse discharge is adopted, the peak voltage cannot be controlled in a constant voltage mode, the sealing pressure values of samples excited every time are different, and the repeatability of the spectrometer is poor.

Namely: there is a need for a spectrometer excitation light source with adjustable frequency and good repeatability.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an adjustable digital spectrum appearance excitation light source of frequency, high pressure, job stabilization, the frequency stability can overcome prior art's not enough.

The technical scheme of the utility model is that: a digital spectrometer excitation light source with adjustable frequency comprises a pulse generator, wherein the output end of the pulse generator is respectively connected with a double-path pulse current generation control circuit and an impulse voltage pulse generator, and the impulse voltage pulse generator is connected with an impulse voltage generation circuit through an isolation circuit I; the impulse voltage generating circuit comprises a first power supply, wherein the first power supply is sequentially connected with a voltage energy accumulator, a pulse forming network impulse voltage generating circuit and a step-up transformer in series; the double-path pulse current generation control circuit comprises an isolation circuit II which is connected in parallel, the isolation circuit II is connected with the pulse formation network impact current generation circuit in series, the input end of the pulse formation network impact current generation circuit is connected with a power supply II and a current energy storage device which are connected in series, the output end of the pulse formation network impact current generation circuit is connected with the damping diode, and the output end of the damping diode is connected with the output end of the step-up transformer in parallel and is grounded.

The impulse voltage generating circuit of the pulse forming network comprises Q1, D2 and D3 which are connected to Q1 in series, a capacitor C6 connected with D2 and D3 in parallel, and a resistor R11.

One of the impulse network impact current generating circuits comprises an insulated gate bipolar transistor IGBT-N I, wherein D7 and D8 which are mutually connected in series are arranged on the insulated gate bipolar transistor IGBT-N I, a resistor R6 and a capacitor C1 which are mutually connected with D7 and D8 in parallel are arranged on the insulated gate bipolar transistor IGBT-N I, and an inductor L1 is arranged at the output end of the insulated gate bipolar transistor IGBT-N I; the other one comprises an insulated gate bipolar transistor IGBT-N II, the IGBT-N II is provided with D9 and D10 which are mutually connected in series, a resistor R11 and a capacitor C4 which are mutually connected with D9 and D10 in parallel, and the output end of the IGBT-N II is provided with an inductor L2.

One of the isolation circuits II comprises a voltage U1, and a resistor R7 and a resistor R8 are respectively connected in series at the input end and the output end of the voltage U1; the other one comprises a voltage U5, and a resistor R9 and a resistor R10 are respectively connected in series at the input end and the output end of the voltage U5.

The number of the pulse generators is two, one of the pulse generators comprises a voltage U3, and a capacitor C2 is arranged on the voltage U3; the other one comprises a voltage U4, and a capacitor C3 is arranged on the voltage U4; the voltage U3 and the voltage U4 are respectively connected to two isolation circuits II which are connected in parallel with each other through p 1.

The first power supply is a 110V power supply, and a relay is connected to the first power supply to control the power supply of the whole circuit.

The first isolation circuit comprises a voltage U2, and a resistor R3 and a resistor R4 are respectively connected in series at the input end and the output end of the voltage U2.

The boosting transformer comprises a transformer T1, a resistor R2 and a capacitor C7 which are mutually connected in series are arranged on the transformer T1, and the resistor R2 and the capacitor C7 are connected in parallel with D1.

The aforementioned current accumulator comprises a capacitor C4 and a capacitor C10.

Compared with the prior art, the utility model discloses adjustable digital spectrum appearance excitation light source of frequency has at the advantage that has: the light source is the conversion with adjustable frequency of 100-1000 Hz, and can meet the requirement of analyzing samples of various materials; high-voltage ignition at 15000V, and spark discharge by adopting a large-capacity capacitor; discharging 20A high current; the current can be selected for double-path asynchronous output, the service life problem of the device under the condition of large current is solved, the large current and the high voltage are mutually separated, and the stability is improved. The adjustable frequency, to the user to various analysis material's difference, the frequency of selecting for use is different, to low melting point, easily arouse the material, if use high frequency, the sample receives the energy in unit interval greatly, and the sample temperature rises, can make the sample melt, this can cause devastating disaster to analytical instrument, use low frequency can guarantee that the sample is by fine excitation, also can guarantee simultaneously that the sample does not melt, to high melting point, difficult arouse the material, the low frequency can appear unable arouse, arouse the unstable condition, lead to the measuring result inaccurate. The adjustable frequency meets the requirements of most users. The utility model discloses a mutual isolation's isolating circuit controls the parallelly connected double circuit heavy current of each other respectively and discharges, guarantees not influence each other between two circuits, keeps apart front end low pressure and rear end high pressure simultaneously again, and 15 KV's high pressure can be kept apart to the isolating circuit.

Drawings

Fig. 1 is a schematic view of the connection structure of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

Fig. 3 is a schematic diagram of the impulse voltage generating circuit of the pulse forming network of the present invention.

Fig. 4 is a schematic diagram of the boost transformer circuit of the present invention.

Fig. 5 is a schematic circuit diagram of the impulse voltage generator of the present invention.

Fig. 6 is a schematic diagram of the first circuit of the isolation circuit of the present invention.

Fig. 7 is a schematic diagram of the second circuit of the isolation circuit of the present invention.

Fig. 8 is a schematic diagram of the current accumulator circuit of the present invention.

Fig. 9 is a schematic diagram of the impulse network impulse current generating circuit of the present invention.

Fig. 10 is a schematic diagram of another impulse network inrush current generating circuit according to the present invention.

Fig. 11 is a schematic diagram of the pulse generator circuit of the present invention.

Wherein the voltage accumulator 1; a pulse forming network impulse voltage generating circuit 2; a step-up transformer 3; a surge voltage pulse generator 4; an isolation circuit number 5; an isolation circuit II 6; a current accumulator 7; a pulse forming network impulse current generating circuit 8; a damping diode 9; a pulse generator 10.

Detailed Description

Embodiment 1. as shown in fig. 1, an excitation light source of a frequency-adjustable digital spectrometer comprises a pulse generator 10, wherein the output end of the pulse generator 10 is respectively connected with a two-way pulse current generation control circuit and an impulse voltage pulse generator 4, and the impulse voltage pulse generator 4 is connected with an impulse voltage generation circuit through an isolation circuit I5; the impulse voltage generating circuit comprises a first power supply, wherein the first power supply is sequentially connected with a voltage energy accumulator 1, a pulse forming network impulse voltage generating circuit 2 and a booster transformer 3 in series; the two-way pulse current generation control circuit comprises an isolation circuit II 6 which is connected in parallel, the isolation circuit II 6 is connected with a pulse formative network impact current generation circuit 8 in series, the input end of the pulse formative network impact current generation circuit 8 is connected with a power supply II and a current energy accumulator 7 which are connected in series, the output end of the pulse formative network impact current generation circuit 8 is connected with a damping diode 9, and the output end of the damping diode 9 is connected with the output end of the booster transformer 3 in parallel and is grounded.

The pulse forming network impulse voltage generating circuit 2 comprises a Q1, D2 and D3 which are connected to a Q1 in series, a capacitor C6 connected with the D2 and the D3 in parallel, and a resistor R11.

One of the pulse forming network impact current generating circuits 8 comprises an insulated gate bipolar transistor IGBT-N I, D7 and D8 which are mutually connected in series are arranged on the insulated gate bipolar transistor IGBT-N I, a resistor R6 and a capacitor C1 which are mutually connected in parallel with D7 and D8, and an inductor L1 is arranged at the output end of the insulated gate bipolar transistor IGBT-N I; the other one comprises an insulated gate bipolar transistor IGBT-N II, the IGBT-N II is provided with D9 and D10 which are mutually connected in series, a resistor R11 and a capacitor C4 which are mutually connected with D9 and D10 in parallel, and the output end of the IGBT-N II is provided with an inductor L2.

One of the isolation circuits II 6 comprises a voltage U1, and a resistor R7 and a resistor R8 are respectively connected in series at the input end and the output end of the voltage U1; the other one comprises a voltage U5, and a resistor R9 and a resistor R10 are respectively connected in series at the input end and the output end of the voltage U5.

The number of the pulse generators is 10, one of the pulse generators comprises a voltage U3, and a capacitor C2 is arranged on the voltage U3; the other one comprises a voltage U4, and a capacitor C3 is arranged on the voltage U4; the voltage U3 and the voltage U4 are respectively connected to two isolation circuits No. 6 which are connected in parallel with each other through p 1.

The first isolation circuit No. 5 comprises a voltage U2, and a resistor R3 and a resistor R4 are respectively connected in series at the input end and the output end of a voltage U2.

The boosting transformer 3 comprises a transformer T1, a resistor R2 and a capacitor C7 which are mutually connected in series are arranged on the transformer T1, and the resistor R2 and the capacitor C7 are connected in parallel with D1.

The current storage 7 comprises a capacitor C4 and a capacitor C10.

The pulse forming network impulse voltage generating circuit 2 generates a high-voltage pulse of 110V, the pulse signal is boosted to 15000V through a booster transformer, and the discharge is carried out on the ignition positive plate.

The impulse network rush current generating circuit 8 generates a large current of 20A, and the large current is applied to 15000V voltage through a damping diode, and discharges at an ignition positive plate.

Claims

1. The utility model provides a digital spectrometer excitation light source that frequency is adjustable, it includes impulse generator (10), its characterized in that: the output end of the pulse generator (10) is respectively connected with a double-path pulse current generation control circuit and an impulse voltage pulse generator (4), and the impulse voltage pulse generator (4) is connected with an impulse voltage generating circuit through an isolation circuit I (5); the impulse voltage generating circuit comprises a power supply I, wherein the power supply I is sequentially connected with a voltage energy storage device (1), a pulse forming network impulse voltage generating circuit (2) and a boosting transformer (3) in series; the double-path pulse current generation control circuit comprises an isolation circuit II (6) which are connected in parallel, the isolation circuit II (6) is connected with the pulse formation network impact current generation circuit (8) in series, the input end of the pulse formation network impact current generation circuit (8) is connected with a power supply II and a current energy accumulator (7) which are connected in series, the output end of the pulse formation network impact current generation circuit (8) is connected with the damping diode (9), and the output end of the damping diode (9) is connected with the output end of the boosting transformer (3) in parallel and is grounded.

2. The excitation light source of claim 1, wherein: the pulse forming network impulse voltage generating circuit (2) comprises a Q1, D2 and D3 which are connected to a Q1 in series, a capacitor C6 connected with the D2 and the D3 in parallel, and a resistor R11.

3. The excitation light source of claim 1, wherein: one of the pulse forming network impact current generating circuits (8) comprises an insulated gate bipolar transistor IGBT-N I, D7 and D8 which are mutually connected in series are arranged on the insulated gate bipolar transistor IGBT-N I, a resistor R6 and a capacitor C1 which are mutually connected in parallel with D7 and D8, and an inductor L1 is arranged at the output end of the insulated gate bipolar transistor IGBT-N I; the other one comprises an insulated gate bipolar transistor IGBT-N II, the IGBT-N II is provided with D9 and D10 which are mutually connected in series, a resistor R11 and a capacitor C4 which are mutually connected with D9 and D10 in parallel, and the output end of the IGBT-N II is provided with an inductor L2.

4. The excitation light source of claim 1, wherein: one of the isolation circuits II (6) comprises a voltage U1, and a resistor R7 and a resistor R8 are respectively connected in series at the input end and the output end of the voltage U1; the other one comprises a voltage U5, and a resistor R9 and a resistor R10 are respectively connected in series at the input end and the output end of the voltage U5.

5. The excitation light source of claim 1, wherein: the number of the pulse generators (10) is two, one of the pulse generators comprises a voltage U3, and a capacitor C2 is arranged on the voltage U3; the other one comprises a voltage U4, and a capacitor C3 is arranged on the voltage U4; the voltage U3 and the voltage U4 are respectively connected to two isolation circuits II (6) which are connected in parallel through p 1.

6. The excitation light source of claim 1, wherein: the first power supply is a 110V power supply, and a relay is connected to the first power supply to control the power supply of the whole circuit.

7. The excitation light source of claim 1, wherein: the first isolation circuit (5) comprises a voltage U2, and a resistor R3 and a resistor R4 are respectively connected in series at the input end and the output end of the voltage U2.

8. The excitation light source of claim 1, wherein: the boosting transformer (3) comprises a transformer T1, a resistor R2 and a capacitor C7 which are mutually connected in series are arranged on the transformer T1, and the resistor R2 and the capacitor C7 are connected in parallel with D1.

9. The excitation light source of claim 1, wherein: the current accumulator (7) comprises a capacitor C4 and a capacitor C10.