High-reliability multi-torch igniter system configuration method

Abstract

The invention discloses a configuration method for a high-reliability multi-torch igniter system. The configuration method comprises the following steps: configuring two spark plugs and a high-pressure pack for each torch igniter in the multi-torch igniter system; the two spark plugs are mutually redundant and are arranged on the torch igniter in parallel; and according to the number of the torch igniters in the multi-torch igniter system, a corresponding cross connection strategy is selected, and ignition configuration of the multiple torch igniters is achieved. According to the method, on the basis that the number of products is not increased, redundancy control over the high-voltage pack is achieved only by changing the connection mode of the spark plug and the high-voltage pack from independent connection to cross connection, and the system reliability is improved; the method is suitable for two or more torch igniter systems, and the system reliability is improved through probability calculation verification.

Description

Technical Field

[0001] The invention belongs to the technical field of torch igniter ignition, and in particular relates to a high-reliability multi-torch igniter system configuration method. Background Art

[0002] A torch igniter is an ignition tool that uses pulsed electronic devices to generate high-voltage electricity to ignite fuel. The torch igniter has stable ignition, adjustable energy, is reusable and low-cost, and is widely used in oil, natural gas, chemicals, aerospace engines, large-scale events, etc. The torch igniter system includes a high-voltage package, a control cable, a spark plug and a torch igniter. The high-voltage package is used to generate high-voltage current, which is supplied to the spark plug through the control cable, thereby controlling the ignition of the torch igniter. In order to ensure the high reliability of the ignition of the torch igniter, a torch igniter is generally equipped with more than two spark plugs and their control cables. When there are multiple torch igniters in the entire system, multiple high-voltage packages are required to supply power. If any high-voltage package fails, the corresponding torch igniter will not be able to ignite normally.

[0003] Taking the liquid rocket full-flow regenerative cycle engine as an example, its semi-system hot test device uses two torch igniters to ignite the oxygen-rich gas generator and the fuel-rich gas generator respectively; the whole machine uses three torch igniters to ignite the oxygen-rich gas generator, the fuel-rich gas generator and the thrust chamber respectively. In the flare igniter system, although each flare igniter adopts a redundant design: any one of the two spark plugs that control the ignition can work normally, which improves the ignition reliability of a single flare igniter. However, the two spark plugs of a flare igniter are independently connected and controlled by the same high-voltage package. Once the high-voltage package fails, the flare igniter it controls will inevitably fail. Summary of the invention

[0004] The technology of the present invention solves the problem: overcomes the shortcomings of the prior art and provides a high-reliability multi-torch igniter system configuration method. Without increasing the number of products, it only changes the connection mode of the spark plug and the high-voltage package - from independent connection to cross connection, thereby realizing high-voltage package redundant control and improving system reliability. The method is applicable to two or more torch igniter systems, and the system reliability is improved through probability calculation verification.

[0005] In order to solve the above technical problems, the present invention discloses a high-reliability multi-torch igniter system configuration method, comprising:

[0006] Each flare igniter in the multi-flare igniter system is respectively equipped with two spark plugs and a high-voltage package; wherein the two spark plugs are mutually redundant and are arranged in parallel on the flare igniter;

[0007] According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to realize the ignition configuration of multiple flare igniters.

[0008] In the above-mentioned high-reliability multi-torch igniter system configuration method, a corresponding cross-connection strategy is selected according to the number of torch igniters in the multi-torch igniter system to realize the ignition configuration of multiple torch igniters, including: when the number of torch igniters in the multi-torch igniter system is 2, a double cross-connection strategy is adopted to realize the ignition configuration of two torch igniters.

[0009] In the above high reliability multi-torch igniter system configuration method, the double cross connection strategy is as follows:

[0010] The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect;

[0011] The high-voltage package A2 of the second torch igniter D2 passes through cable B 2_1 Spark plug C of the first torch igniter D1 1_1 Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_2 Spark plug C with the second torch igniter D2 2_2 connect.

[0012] In the above-mentioned high-reliability multi-torch igniter system configuration method, a corresponding cross-connection strategy is selected according to the number of torch igniters in the multi-torch igniter system to realize the ignition configuration of multiple torch igniters, including: when the number of torch igniters in the multi-torch igniter system is 3, a three-cross-connection strategy is adopted to realize the ignition configuration of three torch igniters.

[0013] In the above high reliability multi-torch igniter system configuration method, the three cross connection strategy is as follows:

[0014] The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect;

[0015] The high-voltage package A2 of the second torch igniter D2 passes through cable B 2_1 Spark plug C with the second torch igniter D2 2_2Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_2 Spark plug C with 3rd torch igniter D3 3_1 connect;

[0016] The high-voltage package A3 of the third torch igniter D3 passes through cable B 3_1 Spark plug C with 3rd torch igniter D3 3_2 Connection: The high voltage package A3 of the third torch igniter D3 is connected via cable B 3_2 Spark plug C of the first torch igniter D1 1_1 connect.

[0017] In the above-mentioned high-reliability multi-torch igniter system configuration method, a corresponding cross-connection strategy is selected according to the number of torch igniters in the multi-torch igniter system to realize the ignition configuration of multiple torch igniters, including: when the number of torch igniters in the multi-torch igniter system is n≥4, an n cross-connection strategy is adopted to realize the ignition configuration of n torch igniters.

[0018] In the above high reliability multi-torch igniter system configuration method, the n cross connection strategy is as follows:

[0019] The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect;

[0020] ···

[0021] The i-th torch igniter D i High voltage package A i Via cable B i_1 With the i-th torch igniter D i Spark plug C i_2 Connection: i torch igniter D i High voltage package A i Via cable B i_2 With the i+1th torch igniter D i+1 Spark plug C (i+1)_1 connect;

[0022] ···

[0023] The nth torch igniter D n High voltage package A n Via cable B n_1 With the nth torch igniter D n Spark plug C n_2 Connection: nth torch igniter Dn High voltage package A n Via cable B n_2 Spark plug C of the first torch igniter D1 1_1 connect.

[0024] In the above high-reliability multi-torch igniter system configuration method, the mathematical expression of the n cross-connection strategy is as follows:

[0025]

[0026] Among them, A i Indicates the i-th high-voltage package, B i_1 Indicates the first cable connected to the i-th high-voltage package, B i_2 Indicates the second cable connected to the i-th high-voltage package, C i_1 Indicates the first spark plug connected to the i-th high-voltage package, C i_2 Indicates the second spark plug connected to the i-th high-voltage package, D i represents the i-th torch igniter, “-” represents the connection relationship, i∈n.

[0027] The present invention has the following advantages:

[0028] The present invention discloses a high-reliability multi-torch igniter system configuration method. Without increasing the number of products, only by changing the connection mode of the spark plug and the high-voltage package - from independent connection to cross connection, the high-voltage package redundant control is realized and the system reliability is improved. The method is applicable to two or more torch igniter systems, and the system reliability is improved through probability calculation verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flow chart of a high-reliability multi-torch igniter system configuration method in an embodiment of the present invention;

[0030] Figure 2 is a configuration diagram of a double cross connection strategy in an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of a configuration of a three-cross connection strategy in an embodiment of the present invention;

[0032] Figure 4 It is a configuration diagram of an independent connection strategy in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Reference Figure 1In this embodiment, the high-reliability multi-torch igniter system configuration method includes:

[0035] Step 1: configure two spark plugs and a high-voltage package for each torch igniter in the multi-torch igniter system, wherein the two spark plugs are redundant to each other.

[0036] Step 2: According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to implement ignition configuration for multiple flare igniters.

[0037] In this embodiment, the specific implementation of step 2 is as follows:

[0038] Preferably, when the number of torch igniters in the multi-torch igniter system is 2, a double cross connection strategy is adopted to realize the ignition configuration of the two torch igniters. Figure 2 As shown, the double cross connection strategy is as follows: The high voltage package A1 of the first torch igniter D1 is connected through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connect the high-voltage package A1 of the first torch igniter D1 through cable B 1_2 Spark plug C with the second torch igniter D2 2_1 Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_1 Spark plug C of the first torch igniter D1 1_1 Connect the high-voltage package A2 of the second torch igniter D2 through cable B 2_2 Spark plug C with the second torch igniter D2 2_2 connect.

[0039] Preferably, when the number of torch igniters in the multi-torch igniter system is 3, a three-cross connection strategy is adopted to realize the ignition configuration of the three torch igniters. Figure 3 As shown, the three-cross connection strategy is as follows: The high-voltage package A1 of the first torch igniter D1 is connected through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connect the high-voltage package A1 of the first torch igniter D1 through cable B 1_2 Spark plug C with the second torch igniter D2 2_1 Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_1 Spark plug C with the second torch igniter D2 2_2 Connect the high-voltage package A2 of the second torch igniter D2 through cable B 2_2 Spark plug C with 3rd torch igniter D3 3_1 Connection: The high voltage package A3 of the third torch igniter D3 is connected via cable B 3_1Spark plug C with 3rd torch igniter D3 3_2 Connect the high-voltage package A3 of the third torch igniter D3 through cable B 3_2 Spark plug C of the first torch igniter D1 1_1 connect.

[0040] Preferably, when the number of torch igniters in the multi-torch igniter system is n≥4, an n cross-connection strategy is adopted to realize the ignition configuration of n torch igniters. By analogy, the n cross-connection strategy is as follows: the high-voltage package A1 of the first torch igniter D1 is connected to the ignition cable B1 through the cable B2. 1_1 Spark plug C of the first torch igniter D1 1_2 Connect the high-voltage package A1 of the first torch igniter D1 through cable B 1_2 Spark plug C with the second torch igniter D2 2_1 Connection;...; i-th torch igniter D i High voltage package A i Via cable B i_1 With the i-th torch igniter D i Spark plug C i_2 Connection, torch igniter D i High voltage package A i Via cable B i_2 With the i+1th torch igniter D i+1 Spark plug C (i+1)_1 Connect;...;nth torch igniter D n High voltage package A n Via cable B n_1 With the nth torch igniter D n Spark plug C n_2 Connection, nth torch igniter D n High voltage package A n Via cable B n_2 Spark plug C of the first torch igniter D1 1_1 The mathematical expression is as follows:

[0041]

[0042] Among them, A i Indicates the i-th high-voltage package, B i_1 Indicates the first cable connected to the i-th high-voltage package, B i_2 Indicates the second cable connected to the i-th high-voltage package, C i_1 Indicates the first spark plug connected to the i-th high-voltage package, C i_2 Indicates the second spark plug connected to the i-th high-voltage package, D i represents the i-th torch igniter, “-” represents the connection relationship, i∈n.

[0043] In this embodiment, multiple torch igniters are installed in different parts of the engine. If any torch igniter fails, the entire system fails. Figure 4 As shown, it is an ignition configuration of two torch igniters based on the independent connection strategy. Under the independent connection strategy, the high-voltage package corresponding to the current torch igniter is connected to the two spark plugs corresponding to the current torch igniter through two cables respectively. If the high-voltage package corresponding to the current torch igniter fails, the two spark plugs corresponding to the current torch igniter will fail, which will cause the ignition failure of the current torch igniter, and then cause the failure of the entire system. It can be seen that the torch igniter system configured with the independent connection strategy has low ignition reliability. If the cross-connection strategy described in the embodiment of the present invention is adopted, even if the high-voltage package corresponding to the current torch igniter fails, the ignition of the current torch igniter can be achieved through the high-voltage packages corresponding to other torch igniters, thereby improving the ignition reliability of the system.

[0044] On the basis of the above-mentioned embodiments, the ignition reliability of the method of the present invention is verified by theoretical calculation below.

[0045] First, it is stated that in this embodiment, P X Represents the reliability of object X. Assuming that the reliability of the four components in the system is 0.999, and the reliability of different batches of products is the same, that is:

[0046] Component Name Code Reliability High voltage package <![CDATA[P A ]]> 0.999 cable <![CDATA[P B ]]> 0.999 spark plug <![CDATA[P C ]]> 0.999 Ignition <![CDATA[P D ]]> 0.999

[0047] Table 1, Component reliability diagram

[0048] 1) When two torch igniters are configured with independent connection strategies, the corresponding reliability P DL-2 for:

[0049] P DL-2 =(P A ×(1-(1-P B ·P C ) 2 )×P D ) 2

[0050] 2) When two torch igniters are configured with cross-connection strategy, the corresponding reliability P JC-2 for:

[0051] P JC-2 =(P A ×(1-(1-P B ×P C ) 2 )×P D ) 2 +2×P A ×(1-PA )×(P B ×P C ×P D ) 2

[0052] 3) When the three torch igniters are configured with independent connection strategies, the corresponding reliability P DL-3 for:

[0053] P DL-3 =(P A ×(1-(1-P B ·P C ) 2 )×P D ) 3

[0054] 4) When the three torch igniters are configured with a cross-connection strategy, the corresponding reliability P JC-3 for:

[0055] P JC-3 =(P A ×(1-(1-P B ×P C ) 2 )×P D ) 3 +3×P A 2 ×(1-P A )×(1-(1-P B ×P C ) 2 )×P D 3 ×(P B ×P C ) 2

[0056] By calculation, we can get:

[0057] P DL-2 =0.995998, P JC-2 =0.997984, reliability increased by 0.2%;

[0058] P DL-3 =0.994003, P JC-3 0.996976, reliability increased by 0.3%.

[0059] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0060] The contents not described in detail in the specification of the present invention belong to the common knowledge of the professionals in this field.

Claims

1. A high-reliability multi-torch igniter system configuration method, characterized in that: include: Each flare igniter in the multi-flare igniter system is respectively equipped with two spark plugs and a high-voltage package; wherein the two spark plugs are mutually redundant and are arranged in parallel on the flare igniter; According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to realize the ignition configuration of multiple flare igniters.

2. The high-reliability multi-torch igniter system configuration method according to claim 1, characterized in that: According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to realize the ignition configuration of multiple flare igniters, including: when the number of flare igniters in the multi-flare igniter system is 2, a double cross-connection strategy is adopted to realize the ignition configuration of two flare igniters.

3. The high-reliability multi-torch igniter system configuration method according to claim 2, characterized in that: The double cross connection strategy is as follows: The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect; The high-voltage package A2 of the second torch igniter D2 passes through cable B 2_1 Spark plug C of the first torch igniter D1 1_1 Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_2 Spark plug C with the second torch igniter D2 2_2 connect.

4. The high-reliability multi-torch igniter system configuration method according to claim 1, characterized in that: According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to realize the ignition configuration of multiple flare igniters, including: when the number of flare igniters in the multi-flare igniter system is 3, a three-cross-connection strategy is adopted to realize the ignition configuration of three flare igniters.

5. The high-reliability multi-torch igniter system configuration method according to claim 4, characterized in that: The three-cross connection strategy is as follows: The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect; The high-voltage package A2 of the second torch igniter D2 passes through cable B 2_1 Spark plug C with the second torch igniter D2 2_2 Connection: The high voltage package A2 of the second torch igniter D2 is connected via cable B 2_2 Spark plug C with 3rd torch igniter D3 3_1 connect; The high-voltage package A3 of the third torch igniter D3 passes through cable B 3_1 Spark plug C with 3rd torch igniter D3 3_2 Connection: The high voltage package A3 of the third torch igniter D3 is connected via cable B 3_2 Spark plug C of the first torch igniter D1 1_1 connect.

6. The high-reliability multi-torch igniter system configuration method according to claim 1, characterized in that: According to the number of flare igniters in the multi-flare igniter system, a corresponding cross-connection strategy is selected to realize the ignition configuration of multiple flare igniters, including: when the number of flare igniters in the multi-flare igniter system is n≥4, an n cross-connection strategy is adopted to realize the ignition configuration of n flare igniters.

7. The high-reliability multi-torch igniter system configuration method according to claim 6, characterized in that: The cross-connection strategy is as follows: The high-voltage package A1 of the first torch igniter D1 passes through cable B 1_1 Spark plug C of the first torch igniter D1 1_2 Connection: The high voltage package A1 of the first torch igniter D1 is connected via cable B 1_2 Spark plug C with the second torch igniter D2 2_1 connect; ··· The i-th torch igniter D i High voltage package A i Via cable B i_1 With the i-th torch igniter D i Spark plug C i_2 Connection: i torch igniter D i High voltage package A i Via cable B i_2 With the i+1th torch igniter D i+1 Spark plug C (i+1)_1 connect; ··· The nth torch igniter D n High voltage package A n Via cable B n_1 With the nth torch igniter D n Spark plug C n_2 Connection: nth torch igniter D n High voltage package A n Via cable B n_2 Spark plug C of the first torch igniter D1 1_1 connect.

8. The high-reliability multi-torch igniter system configuration method according to claim 7, characterized in that: The mathematical expression of the n cross-connection strategy is as follows: Among them, A i Indicates the i-th high-voltage package, B i_1 Indicates the first cable connected to the i-th high-voltage package, B i_2 Indicates the second cable connected to the i-th high-voltage package, C i_1 Indicates the first spark plug connected to the i-th high-voltage package, C i_2 Indicates the second spark plug connected to the i-th high-voltage package, D i Represents the i-th torch igniter, "-" indicates the connection relationship, i∈n.

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