A detonator fixing device

Abstract

The present invention discloses a detonator fixing device, which includes a mounting base. An installation cavity for installing a detonator is provided on the mounting base; a probe hole for installing an optical fiber probe is further provided on the mounting base; a first observation hole is also formed on the mounting base, and the position of the first observation hole satisfies that after the detonator is installed in the installation cavity, the optical fiber probe arranged in the probe hole emits light and irradiates on the end face of the detonator, the spot position of the light spot formed on the end face of the detonator can be observed through the first observation hole. By adopting the technical solution provided by this scheme, the detection area position of the optical fiber probe on the end face of the detonator can be conveniently obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion test equipment, and particularly to a detonator fixing device. Background Art

[0002] With the development of the scientific and technological level and the change of application requirements, initiating explosive devices are developing towards a safer and more reliable direction. As a relatively common type of initiating explosive device, detonators are widely used in civilian and military applications. The performance of detonator products, such as output performance, reliability, safety, environmental adaptability, testability, etc., is the focus of attention of domestic and foreign scholars and engineering and technical personnel. The action time or delay time is an important technical indicator of detonator products. With the development of engineering and science and technology, obtaining the detonator action time more accurately, efficiently and reliably is of great significance for evaluating the performance of detonator products.

[0003] Laser measurement technology is a relatively advanced engineering measurement technology, with characteristics such as non-contact, fast response, and accurate diagnosis. According to the monochromaticity and coherence of the laser, observing a moving object can generate the optical wave Doppler effect, and then by converting and processing the optical signal, the speed or displacement information of the object can be obtained finally. This technology is applied to the performance diagnosis of detonator initiating explosive devices, and has the advantages of accuracy, directness, speed, reliability, convenience, etc. compared with the methods based on detonator explosion sound wave recognition method, electrode conduction method, impact luminescence scanning method, impact pressure method, and can adapt to environmental conditions such as low air pressure, high air pressure, high temperature, low temperature, vibration, and centrifugation.

[0004] In the prior art, such as the technical solution provided by the patent application No. CN201811031118.5, the invention creation name is a method for synchronously measuring multi-parameters of the detonation performance of condensed-phase high-energy explosives, which specifically provides a technical solution that provides a filling space for the explosive charge through a housing, installs an optical fiber probe in the positioning hole provided on the housing, and the optical fiber probe is connected to a photoelectric detector. In this solution, the relevant parameter tests during the explosion of the explosive are completed by using the optical fiber probe.

[0005] Further improving the application of the optical fiber probe in explosion tests can promote the further development of explosion test technology. Summary of the Invention

[0006] Aiming at the technical problem that further improving the application of the optical fiber probe in explosion tests can promote the further development of explosion test technology, the present invention provides a detonator fixing device. By adopting the technical solution provided by this scheme, the detection area position of the optical fiber probe on the detonator end face can be conveniently obtained.

[0007] The object of the present invention is mainly achieved through the following technical solutions:

[0008] A detonator fixing device, comprising a mounting base, wherein an installation cavity for installing a detonator is arranged on the mounting base; a probe hole for installing an optical fiber probe is also arranged on the mounting base;

[0009] A first observation hole is further formed in the mounting base, and the position of the first observation hole satisfies that after the detonator is installed in the installation cavity, the optical fiber probe arranged in the probe hole emits light and irradiates on the end face of the detonator, the spot position of the light spot formed by the light on the end face of the detonator can be observed through the first observation hole.

[0010] In the specific application of this solution, it is used to fix the detonator and the optical fiber probe, and the optical fiber probe is used for measuring the action time of the detonator;

[0011] The specific fixing method can be carried out in the following steps in sequence:

[0012] S1. Complete the fixing of the detonator in the installation cavity;

[0013] S2. Fix the optical fiber probe on the columnar section through the probe hole, specifically:

[0014] Embed the optical fiber probe into the probe hole, and observe the spot position of the light spot formed by the light emitted by the optical fiber probe on the end face of the detonator through the first observation hole;

[0015] When the spot position is located in the middle of the end face of the detonator, complete the fixing of the optical fiber probe on the mounting base;

[0016] When the spot position deviates from the middle of the end face of the detonator, adjust the angle of the optical fiber probe to make the spot position located in the middle of the end face of the detonator, and then complete the fixing of the optical fiber probe on the mounting base.

[0017] The specific scheme for measuring the action time can adopt the existing scheme, specifically: connect the two electrode leads of the detonator to the high-voltage and high-current cable, connect the other end of the high-voltage and high-current cable to the detonating device, and connect the detonating device to the oscilloscope through the cable. Connect the optical fiber probe to the mounting base through the probe hole, connect the tail fiber of the optical fiber probe to the optoelectronic converter, and connect the optoelectronic converter to the oscilloscope through the cable. When conducting the measurement work, the detonating device applies voltage and current to the detonator, and the displacement signal generated at the end face of the detonator is transmitted to the optoelectronic converter through the optical fiber probe. The optoelectronic converter converts the optical signal into an electrical signal and transmits it to the oscilloscope through the cable for recording. The calculation method of the detonator action time is as follows: use t to represent the detonator action time; use t1 to represent the cable delay from the detonating device to the electrode leads of the detonator; use t2 to represent the delay from the optical fiber probe to the optoelectronic converter; use t3 to represent the delay of the optoelectronic converter; use t4 to represent the cable delay from the optoelectronic converter to the oscilloscope; use t5 to represent the cable delay from the detonating device to the oscilloscope; t6 represents the time when the output signal of the detonator is recorded in the oscilloscope, and the detonator action time t can be obtained: t = t5 + t6 - t1 - t2 - t3 - t4. At the same time, this scheme uses an optical fiber probe to capture the displacement signal at the end face of the detonator, so it can be specifically applied as a non-contact detonator action time measurement device and method, suitable for measuring the detonator action time under environmental conditions such as low air pressure or other high air pressures, high temperatures, vibrations, and centrifuges.

[0018] Different from the prior art, in the specific application process of this scheme, visible light is led out by the optical fiber probe and a light spot is formed on the end face of the detonator. And through the set first observation hole, it is possible to directly observe whether the light spot of the visible light is located in the middle of the end face of the detonator, and through the first observation hole, the operator is guided to adjust the light spot deviating from the middle of the end face of the detonator to the middle of the end face of the detonator. In this way, since the above light spot position is the signal capture area or displacement signal detection area of the optical fiber probe when the subsequent detonator explodes, and at the same time, after the detonator is detonated, taking advantage of the most obvious characteristic of the displacement signal generated in the middle of the end face of the detonator, the displacement signal at the end face of the detonator can be captured in the first time, so as to achieve the purpose of effectively improving the measurement accuracy of the explosion action time.

[0019] As a further technical solution of the above-mentioned detonator fixing device:

[0020] As a specific implementation form of the mounting base, it is set as: the mounting base includes a columnar section and a compression nut;

[0021] The columnar section is a columnar structure with a central hole provided thereon;

[0022] The compression nut is detachably connected to one end of the mounting base and fixes the detonator through the end plate thereon. The probe hole is provided at the other end of the columnar section, and the mounting cavity is a partial hole section of the central hole;

[0023] The first observation hole is arranged on the side surface of the columnar section. This solution is a mounting base solution that is easy to process. In specific implementation, the columnar section can adopt a cylindrical structure, and the gland can adopt a cap-like structure. This solution is a solution that is convenient for installing a detonator thereon. In specific implementation, after loading the detonator into the central hole, the detonator can be fixed on the mounting base by using a compression nut. The above limitations on the shape of the columnar section and the positions of the probe hole and the first observation hole thereon provide a technical solution in which the detonator is installed at the front end of the columnar section, the fiber optic probe detects the displacement signal from the rear end of the columnar section, and the user observes the position of the light spot from the side of the columnar section through the first observation hole.

[0024] As a specific implementation form of the columnar section, it is set that: the columnar section is a blind tubular structure with a blind plate at one end;

[0025] The probe hole is opened at the center of the blind plate. The central hole is a stepped hole with a larger diameter at the open end than at the blind end. The installation cavity is located at the open end of the central hole, and the stepped surface of the central hole serves as a supporting surface for defining the position of the detonator on the axis of the central hole;

[0026] The side surface of the open end of the columnar section is also provided with connecting threads that are external threads. The compression nut is a cap-like structure with internal threads on the inside. The compression nut is detachably connected to the mounting base by connecting the external threads and the internal threads. This solution takes into account the characteristic that the size of the fiber optic probe is generally smaller than that of the detonator, and provides a technical solution that is convenient for obtaining the columnar section and machining the probe hole on the columnar section. This solution provides a specific solution that is convenient for completing the machining of the compression nut and the columnar section. This solution provides a specific solution that is convenient for realizing the disassembly and assembly of the compression nut on the columnar section. This solution provides a technical solution that is convenient for fixing the detonator in the central hole by providing support for the end face of the detonator through the stepped surface on the central hole.

[0027] For the convenience of controlling the pressure acting on the detonator and ensuring reliable action on the detonator to guarantee the safety, convenience and reliability of the position constraint on the detonator during the use of this fixing device, it is set as follows: It further includes a spring. The spring is used to achieve that when the detonator is installed in the installation cavity with its central axis collinear with the central hole axis and the compression cap is connected on the columnar section, one end of the spring acts on the end face of the detonator, the other end of the spring acts on the end plate of the compression cap, and the spring undergoes elastic deformation along the direction of the central hole axis. When this solution is specifically applied, after the detonator is loaded in the installation cavity, the spring is used as a force transition part between the compression cap and the outer end of the detonator, so that the compression cap pushes the detonator through the elastic force of the spring. In this way, a sharp increase in the pressure acting on the detonator can be effectively avoided, and during the rotation of the compression cap, the detonator is continuously pressed. In specific implementation, the spring is a helical spring, and the hollow space of the helical spring serves as the lead wire hole of the detonator, and a wire passing hole with its axis collinear with the axis of the internal thread thereon is provided on the end plate. In this way, after the detonator is filled, the electrode leg wires on the detonator do not affect the tightening of the compression cap. Further, to avoid damage to the detonator or even safety accidents caused by the rotation of the spring during the tightening of the compression cap, it is set to further include a gasket ring. The gasket ring is in the shape of a flat gasket or uses an existing flat gasket. The gasket is used to be installed between the end face of the detonator and the spring as an isolation part between the spring and the detonator. The hole passage on the gasket ring is used for the electrode leg wires to pass through the gasket ring, and the end of the spring acts on the end face of the gasket.

[0028] As a person skilled in the art, when setting the above first observation hole, in order to expand the area of the observable region inside the columnar section, it is preferably to set the size of the first observation hole to be larger. For the convenience of obtaining a darkroom effect to improve the clarity of the recognition of the spot position, it is set as follows: It further includes a collar that can be sleeved on the columnar section. A second observation hole is provided on the side wall of the collar, and the aperture of the second observation hole is smaller than the aperture of the first observation hole;

[0029] The collar can slide and rotate relative to the axis of the columnar section on the columnar section;

[0030] During the sliding and rotating process, the second observation hole can overlap with the first observation hole and change its position relative to the first observation hole. In this solution, the first observation hole serves as an observation hole passage on the side of the columnar section. Since the aperture of the second observation hole is smaller than the aperture of the first observation hole, during the overlapping of the second observation hole and the first observation hole and the change of the overlapping position relative to the first observation hole, the collar covers a part of the first observation hole to obtain a darkroom effect. To see the spot through the second observation hole, the collar can slide along the axis of the columnar section and / or rotate relative to the axis of the columnar section. In specific implementation, the collar can be made of a light-blocking material.

[0031] After the spot position is identified and adjusted using the ferrule, the ferrule can be detached from the columnar section to prevent it from being damaged during the detonation of the detonator and be used as a reusable part. It is set that the ferrule can be removed from the columnar section. As a person skilled in the art, to achieve the above-mentioned sliding and rotation, it is only necessary to set the inner diameter of the ferrule to be larger than the column section where the first observation hole is located on the columnar section and the column section for installing and detaching the ferrule. For convenience of processing, the columnar section is set as an equal-diameter columnar structure. At this time, it is only necessary to set the inner diameter of the ferrule to be larger than the outer diameter of the columnar section.

[0032] Furthermore, for convenience of processing, the thickness of the blind plate should not be set too thick. As a technical solution that can be used for the initial positioning of the optical fiber probe to improve the positioning efficiency of the optical fiber probe, it is set that: it further includes a guiding tube that is a straight tube section, and the inner diameter of the guiding tube is greater than or equal to the diameter of the optical fiber probe;

[0033] The guiding tube is used for: after the relative position of the guiding tube and the mounting seat is fixed, by partially embedding the optical fiber probe into the guiding tube and partially into the probe hole, the angle between the optical fiber probe and the probe hole is fixed;

[0034] The relative position fixation is: the guiding tube and the probe hole are coaxial. In specific applications, the guiding tube can be directly fixed on the columnar section, or the relative position of the guiding tube and the columnar section can be fixed through a tooling, and specifically fixed so that the guiding tube and the probe hole are coaxial. In this way, the optical fiber probe is introduced into the probe hole through the guiding tube; when the inner diameter of the guiding tube is greater than the diameter of the optical fiber probe and the axial direction of the optical fiber probe is adjusted in the probe hole, it is completed under the constraint of the guiding tube, which can effectively improve the fixation efficiency of the optical fiber probe. In specific implementation, considering the requirements for the thickness of the blind plate, it is preferably to use the tooling to achieve the relative fixation method. The specific fixation method is: a clamping space for fixing the columnar section is provided on the tooling, the guiding tube is fixed on the tooling, and after the optical fiber probe is embedded, the columnar section is detached from the tooling for later measurement of the detonator action time.

[0035] In summary, the present invention has the following beneficial effects compared with the prior art:

[0036] Different from the prior art, in the specific application process of this solution, visible light is led out by an optical fiber probe to form a light spot on the end face of the detonator, and through the first observation hole provided, it is possible to directly observe whether the light spot of the visible light is located in the middle of the end face of the detonator, and through the first observation hole, the operator is guided to adjust the light spot deviating from the middle of the end face of the detonator to the middle of the end face of the detonator. In this way, since the above light spot position is the signal capture area or displacement signal detection area of the optical fiber probe when the subsequent detonator explodes, and at the same time after the detonator is detonated, taking advantage of the most obvious characteristic of the displacement signal generated in the middle of the end face of the detonator, the displacement signal of the end face of the detonator can be captured in the first time, so as to achieve the purpose of effectively improving the measurement accuracy of the explosion action time. Description of the Drawings

[0037] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0038] Figure 1 It is a schematic structural diagram of a specific application embodiment of the fixing device described in the present invention, and this schematic diagram is a perspective view;

[0039] Figure 2 It is a schematic structural diagram of the columnar section part in a specific embodiment of the fixing device described in the present invention;

[0040] Figure 3 It is a schematic structural diagram of a specific embodiment of the fixing device described in the present invention, and this schematic diagram is a sectional view and at the same time an axonometric view;

[0041] Figure 4 It is a system topology diagram of a specific application embodiment of the fixing device described in the present invention, wherein the experimental device is obtained after installing a detonator on this fixing device;

[0042] Figure 5 It is a system topology diagram of a specific application embodiment of the fixing device described in the present invention, wherein the experimental device is obtained after installing a detonator on this fixing device, different from Figure 4 , and this system topology diagram is used to show a specific application embodiment including multiple experimental devices.

[0043] The corresponding relationship between the reference numerals in the above schematic diagrams and the technical terms is as follows: 1. mounting base, 2. compression cap, 3. spring, 4. detonator, 5. guide tube, 6. collar, 7. second observation hole, 8. wire passing hole, 9. plate ring, 10. light passing hole, 11. installation cavity, 12. connecting thread, 13. relief groove, 14. first observation hole, 15. central hole, 16. probe hole, 17. glue injection hole, 18. reamed section, 19. pressure equalizing hole, 20. columnar section. Detailed Embodiments

[0044] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0045] Embodiment 1:

[0046] As Figures 1 to 5 shown, a detonator fixing device includes a mounting base 1, and a mounting cavity 11 for mounting a detonator 4 is provided on the mounting base 1; a probe hole 16 for mounting an optical fiber probe is also provided on the mounting base 1;

[0047] A first observation hole 14 is further formed on the mounting base 1, and the position of the first observation hole 14 satisfies that after the detonator 4 is installed in the mounting cavity 11, the optical fiber probe disposed in the probe hole 16 emits light and irradiates on the end face of the detonator 4, the spot position of the light spot formed on the end face of the detonator 4 can be observed through the first observation hole 14.

[0048] In the specific application of this solution, it is used to fix the detonator 4 and the optical fiber probe, and the optical fiber probe is used for measuring the action time of the detonator 4;

[0049] The specific fixing method can be carried out in the following steps in sequence:

[0050] S1. Complete the fixing of the detonator 4 in the mounting cavity 11;

[0051] S2. Fix the optical fiber probe on the columnar section 20 through the probe hole 16. Specifically:

[0052] Embed the optical fiber probe into the probe hole 16, and observe the spot position of the light spot formed on the end face of the detonator 4 by the light emitted from the optical fiber probe through the first observation hole 14;

[0053] When the spot position is located in the middle of the end face of the detonator 4, complete the fixing of the optical fiber probe on the mounting base 1;

[0054] When the spot position deviates from the middle of the end face of the detonator 4, adjust the angle of the optical fiber probe to make the spot position located in the middle of the end face of the detonator 4, and then complete the fixing of the optical fiber probe on the mounting base 1.

[0055] The specific scheme for measuring the action time can adopt the existing scheme, which can be specifically: connect the two electrode pins of the detonator 4 to the high-voltage and high-current cable, the other end of the high-voltage and high-current cable is connected to the detonator, and the detonator is connected to the oscilloscope through the cable. Connect the optical fiber probe to the mounting base 1 through the probe hole 16, connect the pigtail of the optical fiber probe to the photoelectric converter, and the photoelectric converter is connected to the oscilloscope through the cable. When performing the measurement, the detonator loads voltage and current to the detonator 4, and the displacement signal generated by the end face of the detonator 4 is transmitted to the photoelectric converter through the optical fiber probe, and the photoelectric converter converts the optical signal into an electrical signal and transmits it to the oscilloscope through the cable to be recorded. The calculation method of the action time of detonator 4 is as follows: t represents the action time of detonator 4; t1 represents the cable delay from the detonator to the electrode foot line of detonator 4; t2 represents the delay from the optical fiber probe to the photoelectric converter; t3 represents the delay from the photoelectric converter; t4 represents the delay from the photoelectric converter to the oscilloscope connection cable; t5 represents the delay from the detonator to the oscilloscope cable; t6 represents the moment of the output signal of detonator 4 recorded in the oscilloscope, and the action time t of detonator 4 can be obtained: t=t5+t6-t1-t2-t3-t4. At the same time, this scheme adopts an optical fiber probe for capturing the end displacement signal of detonator 4, so it can be specifically used as a non-contact detonator 4 action time measurement device and method, which is suitable for measuring the action time of detonator 4 under low pressure or other high pressure, high temperature, vibration, centrifugal and other environmental conditions.

[0056] For example Figure 5 The multi-channel application solution provided is used for measuring the action time of N detonators 4:

[0057] The two electrode legs of the first detonator 4 are connected to the high-voltage and high-current cable 1, the two electrode legs of the second detonator 4 are connected to the high-voltage and high-current cable 2, the two electrode legs of the Nth detonator 4 are connected to the high-voltage and high-current cable N, the other end of the high-voltage and high-current cable is connected to the detonating device, the detonating device is connected to the oscilloscope through the cable, the columnar section 2020 is connected to the optical fiber probe, the optical fiber probe pigtail fiber cable 1 is connected to the photoelectric converter, the optical fiber probe pigtail fiber cable 2 is connected to the photoelectric converter, the optical fiber probe pigtail fiber cable N is connected to the photoelectric converter, and the photoelectric converter is connected to the oscilloscope through the cable. When the device is working, the detonating device loads voltage and current to the detonator 4, the displacement signal generated by the end face of the detonator 4 is transmitted to the photoelectric converter through the optical fiber probe, and the photoelectric converter converts the optical signal into an electrical signal and transmits it to the oscilloscope through the cable for recording.

[0058] The method for calculating the action time of detonator 4 is as follows: y Indicates the action time of the first detonator 4; t e Indicates the action time of the second detonator 4; t NIndicates the action time of the Nth detonator 4; t1 represents the cable delay from the initiation device to the electrode leg wires of the detonator 4; t2 represents the delay from the optical fiber probe to the optoelectronic converter; t3 represents the delay of the optoelectronic converter; t4 represents the delay of the cable connecting the optoelectronic converter to the oscilloscope; t5 represents the delay of the cable from the initiation device to the oscilloscope; t 6y Indicates the time of the output signal of the 1st detonator 4 recorded in the oscilloscope; t 6e Indicates the time of the output signal of the 2nd detonator 4 recorded in the oscilloscope; t 6N Indicates the time of the output signal of the Nth detonator 4 recorded in the oscilloscope. It can be known that the action time t of the 1st detonator 4 y : t y = t5 + t 6y - t1 - t2 - t3 - t4; The action time t of the 2nd detonator 4 e : t e = t5 + t 6e - t1 - t2 - t3 - t4; The action time t of the Nth detonator 4 N : t N = t5 + t 6N - t1 - t2 - t3 - t4.

[0059] Different from the prior art, in the specific application process of this solution, visible light is led out by the optical fiber probe to form a light spot on the end face of the detonator 4, and through the first observation hole 14 provided, it is possible to directly observe whether the light spot of the visible light is located in the middle of the end face of the detonator 4. By guiding the operator through the first observation hole 14 to adjust the light spot deviating from the middle of the end face of the detonator 4 to the middle of the end face of the detonator 4. In this way, since the above light spot position is the signal capture area or displacement signal detection area of the optical fiber probe when the subsequent detonator 4 explodes, and at the same time after the detonator 4 is detonated, making use of the characteristic that the displacement signal generated in the middle of the end face of the detonator 4 is the most obvious, the displacement signal of the end face of the detonator 4 can be captured in the first time, so as to achieve the purpose of effectively improving the measurement accuracy of the explosion action time.

[0060] Embodiment 2:

[0061] This embodiment is further optimized on the basis of Embodiment 1:

[0062] As a specific implementation form of the mounting base 1, it is set that: the mounting base 1 includes a columnar section 20 and a compression cap 2;

[0063] The columnar section 20 is a columnar structure provided with a central hole 15 thereon;

[0064] The compression cap 2 is detachably connected to one end of the mounting base 1 and fixes the detonator through the end plate thereon. The probe hole 16 is provided at the other end of the columnar section 20, and the installation cavity 11 is a partial hole section of the central hole 15;

[0065] The first observation hole 14 is arranged on the side surface of the columnar section 20. This solution is a mounting seat 1 solution that is convenient for processing. In specific implementation, the columnar section 20 can adopt a cylindrical structure, and the gland can adopt a cover-like structure. This solution is a solution that is convenient for completing the installation of the detonator 4 thereon. In specific implementation, after the detonator 4 is loaded into the central hole 15, the detonator 4 can be fixed on the mounting seat 1 by using the gland nut 2. The above limitations on the shape of the columnar section 20 and the positions of the probe hole 16 and the first observation hole 14 thereon provide a technical solution in which the detonator 4 is installed at the front end of the columnar section 20, the fiber optic probe detects the displacement signal from the rear end of the columnar section 20, and the user observes the position of the light spot from the side of the columnar section 20 through the first observation hole 14.

[0066] As a specific implementation form of the columnar section 20, it is set that: the columnar section 20 is a blind tubular structure with a blind plate at one end;

[0067] The probe hole 16 is opened at the center of the blind plate. The central hole 15 is a stepped hole with a larger diameter at the open end than at the blind end. The installation cavity 11 is located at the open end of the central hole 15. The stepped surface of the central hole 15 serves as a supporting surface for defining the position of the detonator 4 on the axis of the central hole 15;

[0068] The side surface of the open end of the columnar section 20 is also provided with a connecting thread 12 that is an external thread. The gland nut 2 is a cover-like structure with an internal thread provided on the inside. The gland nut 2 is detachably connected to the mounting seat 1 by connecting the external thread and the internal thread. Considering the characteristic that the size of the fiber optic probe is generally smaller than that of the detonator 4, this solution provides a technical solution that is convenient for obtaining the columnar section 20 and machining the probe hole 16 on the columnar section 20. This solution provides a specific solution that is convenient for completing the machining of the gland nut 2 and the columnar section 20. This solution provides a specific solution that is convenient for realizing the disassembly and assembly of the gland nut 2 on the columnar section 20. This solution provides a technical solution that is convenient for completing the fixation of the detonator 4 in the central hole 15 by providing support for the end surface of the detonator 4 through the stepped surface on the central hole 15.

[0069] For the convenience of controlling the magnitude of the pressure acting on the detonator 4 and ensuring a reliable action on the detonator 4 to guarantee the safety, convenience, and reliability of the position constraint of the detonator 4 during the use of this fixing device, it is set as follows: It further includes a spring 3, and the spring 3 is used to achieve: when the detonator 4 is installed in the installation cavity 11 with its central axis collinear with the axis of the central hole 15 and the compression cap 2 is connected on the columnar section 20, one end of the spring 3 acts on the end face of the detonator 4, the other end of the spring 3 acts on the end plate of the compression cap 2, and the spring 3 undergoes elastic deformation along the axis direction of the central hole 15. When this solution is specifically applied, after the detonator 4 is loaded in the installation cavity 11, the spring 3 is used as a force transition member between the compression cap 2 and the outer end of the detonator 4, so that the compression cap 2 pushes the detonator 4 through the elastic force of the spring 3. In this way, a sudden increase in the pressure acting on the detonator 4 can be effectively avoided, and during the rotation of the compression cap 2, the detonator 4 is continuously pressured. In specific implementation, the spring 3 is a helical spring, and the hollow space of the helical spring serves as the lead hole of the detonator 4, and a threading hole 8 with its axis collinear with the axis of the internal thread thereon is provided on the end plate. In this way, after the detonator 4 is filled, the electrode leg wires on the detonator 4 do not affect the tightening of the compression cap 2. Further, to avoid damage to the detonator 4 or even a safety accident caused by the rotation of the spring 3 during the tightening of the compression cap 2, it is set to further include a washer ring. The washer ring is in the shape of a flat washer or uses an existing flat washer. The washer plate is used to be installed between the end face of the detonator 4 and the spring 3 as an isolation member between the spring 3 and the detonator 4, and the hole passage on the washer ring is used for the electrode leg wires to pass through the washer ring, and the end of the spring 3 acts on the end face of the washer plate.

[0070] As a person skilled in the art, when setting the above first observation hole 14, to expand the area of the observable region inside the columnar section 20, it is preferably set that the size of the first observation hole 14 is relatively large. For the convenience of obtaining a darkroom effect to improve the clarity of the identification of the spot position, it is set as follows: It further includes a collar 6 that can be sleeved on the columnar section 20, and a second observation hole 7 is provided on the side wall of the collar 6, and the aperture of the second observation hole 7 is smaller than the aperture of the first observation hole 14;

[0071] The collar 6 can slide and rotate relative to the axis of the columnar section 20 on the columnar section 20;

[0072] During the sliding and rotating process, the second observation hole 7 can overlap with the first observation hole 14 and change its position relative to the first observation hole 14. In this solution, the first observation hole 14 serves as an observation hole passage on the side of the columnar section 20. Since the aperture of the second observation hole 7 is smaller than that of the first observation hole 14, when the second observation hole 7 overlaps with the first observation hole 14 and changes its overlapping position relative to the first observation hole 14, the collar 6 covers a part of the first observation hole 14 to obtain a darkroom effect. To see the light spot through the second observation hole 7, the collar 6 can slide along the axis of the columnar section 20 and / or rotate relative to the axis of the columnar section 20. In specific implementation, the collar 6 can be made of light-blocking material.

[0073] As a solution, after the position of the light spot is identified and adjusted by using the collar 6, the collar 6 can be detached from the columnar section 20 to avoid being damaged during the explosion of the detonator 4 and be used as a reusable part. It is set that the collar 6 can be removed from the columnar section 20. As a person skilled in the art, to achieve the above-mentioned sliding and rotating, the inner diameter of the collar 6 can be set larger than the column section of the first observation hole 14 on the columnar section 20 and the column section for installing and detaching the collar 6. For the convenience of processing, the columnar section 20 is set as an equal-diameter columnar structure. At this time, it only needs to be set that the inner diameter of the collar 6 is larger than the outer diameter of the columnar section 20.

[0074] Embodiment 3:

[0075] This embodiment is further optimized on the basis of Embodiment 1:

[0076] Furthermore, for the convenience of processing, the thickness of the blind plate should not be set too thick. As a technical solution that can be used for the initial positioning of the optical fiber probe to improve the positioning efficiency of the optical fiber probe, it is set that: it further includes a guide tube 5 that is a straight tube section, and the inner diameter of the guide tube 5 is greater than or equal to the diameter of the optical fiber probe;

[0077] The guide tube 5 is used for: after the relative position of the guide tube 5 and the mounting seat 1 is fixed, by partially embedding the optical fiber probe into the guide tube 5 and partially into the probe hole 16, the angle between the optical fiber probe and the probe hole 16 is fixed;

[0078] The relative position is fixed as follows: the guide tube 5 is coaxial with the probe hole 16. In specific applications, the guide tube 5 can be directly fixed on the columnar section 20, or the relative position between the guide tube 5 and the columnar section 20 can be fixed through a tooling, and specifically fixed so that the guide tube 5 is coaxial with the probe hole 16. In this way, the fiber optic probe is introduced into the probe hole 16 through the guide tube 5; when the inner diameter of the guide tube 5 is larger than the diameter of the fiber optic probe, the adjustment of the axis direction of the fiber optic probe in the probe hole 16 is completed under the constraint of the guide tube 5, which can effectively improve the fixing efficiency of the fiber optic probe. In specific implementation, considering the requirements for the thickness of the blind plate, it is preferably to use the tooling to achieve the relative fixing method. The specific fixing method is: a clamping space for fixing the columnar section 20 is provided on the tooling, the guide tube 5 is fixed on the tooling, and after the fiber optic probe is embedded, the columnar section 20 is detached from the tooling for later measurement of the action time of the detonator 4.

[0079] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detonator fixing device, comprising a mounting base (1), wherein an installation cavity (11) for installing a detonator (4) is provided on the mounting base (1); a probe hole (16) for installing an optical fiber probe is further provided on the mounting base (1). It is characterized in that The mounting base (1) is also provided with a first observation hole (14), and the position of the first observation hole (14) satisfies that after the detonator (4) is installed in the installation cavity (11), the optical fiber probe arranged in the probe hole (16) emits light and irradiates on the end face of the detonator (4), the spot position of the light spot formed by the light on the end face of the detonator (4) can be observed through the first observation hole (14); The mounting base (1) includes a columnar section (20) and a compression cap (2); The columnar section (20) is a columnar structure provided with a central hole (15) thereon; The compression cap (2) is detachably connected to one end of the mounting base (1) and fixes the detonator through the end plate thereon. The probe hole (16) is arranged at the other end of the columnar section (20), and the installation cavity (11) is a partial hole section of the central hole (15); The first observation hole (14) is arranged on the side surface of the columnar section (20); The columnar section (20) is a blind tubular structure with a blind plate arranged at one end; The probe hole (16) is opened at the center of the blind plate. The central hole (15) is a stepped hole with the diameter of the open end larger than that of the blind end. The installation cavity (11) is located at the open end of the central hole (15), and the stepped surface of the central hole (15) serves as a supporting surface for defining the position of the detonator (4) on the axis of the central hole (15); A connecting thread (12) with external threads is also arranged on the side surface of the open end of the columnar section (20). The compression cap (2) is a cap-shaped structure with internal threads arranged on the inner side. The compression cap (2) is detachably connected to the mounting base (1) by connecting the external threads and the internal threads; It also includes a collar (6) that can be sleeved on the columnar section (20). A second observation hole (7) is arranged on the side wall of the collar (6), and the aperture of the second observation hole (7) is smaller than that of the first observation hole (14); The collar can slide and rotate on the columnar section (20) relative to the axis of the columnar section (20); During the sliding and rotating process, the second observation hole (7) can overlap with the first observation hole (14) and change its position relative to the first observation hole (14).

2. The detonator fixing device according to claim 1, characterized in that It also includes a spring (3). The spring (3) is used to achieve that when the detonator (4) is installed in the installation cavity (11) with its central axis collinear with the axis of the central hole (15) and the compression cap (2) is connected to the columnar section (20), one end of the spring (3) acts on the end face of the detonator (4), the other end of the spring (3) acts on the end plate of the compression cap (2), and the spring (3) undergoes elastic deformation along the direction of the central hole axis.

3. The detonator fixing device according to claim 1, characterized in that The collar (6) can be removed from the columnar section (20).

4. The detonator fixing device according to any one of claims 1 to 3, characterized in that It also includes a guide tube (5) that is a straight pipe section, and the inner diameter of the guide tube (5) is greater than or equal to the diameter of the optical fiber probe; The guide tube (5) is used to: after the relative position of the guide tube (5) and the mounting base (1) is fixed, by partially embedding the optical fiber probe into the guide tube (5) and partially into the probe hole (16), the angle between the optical fiber probe and the probe hole (16) is fixed; The relative position fixation is that the guide tube (5) is coaxial with the probe hole (16).

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