CN201229150Y - Reinforced cap for detonator - Google Patents
Reinforced cap for detonator Download PDFInfo
- Publication number
- CN201229150Y CN201229150Y CNU2008201112729U CN200820111272U CN201229150Y CN 201229150 Y CN201229150 Y CN 201229150Y CN U2008201112729 U CNU2008201112729 U CN U2008201112729U CN 200820111272 U CN200820111272 U CN 200820111272U CN 201229150 Y CN201229150 Y CN 201229150Y
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- flash hole
- detonator
- strengthening cap
- strengthening
- medicine groove
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Abstract
The utility model relates to a reinforcing cap for detonators, which comprises an ammunition groove and a combined flash hole on the central portion of the top portion of the ammunition groove, wherein the combined flash hole comprises a cylindrical flash hole and a conical flash hole, wherein the cylindrical flash hole is connected with the central portion of the top portion of the ammunition groove of the reinforcing cap, and the conical flash hole is arranged on one end of the cylindrical flash hole which is faraway from the ammunition groove, and the port of the conical flash hole whose diameter is smaller is connected with the cylindrical flash hole. With the technical proposal, the reinforcing cap achieves the concentration of igniting energy of the detonators, which plays the functions of binding energy and igniting, thereby improving reliability of the ignition of the detonators. The reinforcing cap can get a small enough ultimate diameter size of a flash hole, which is beneficial for solving the problem that the charge of primary high explosive is loose and spilled, and simultaneously has the effect of improving and reinforcing the detonating capability of primary high explosive, and can effectively lower the charge use amount of the primary high explosive.
Description
Technical field
The present invention relates to the priming system field, relate in particular to a kind of the improvement of detonator with strengthening cap.
Background technology
In the production process of industrial detonator, generally all using axial section is the initiating ability that inverted U-shaped metal cap strengthens detonator, and simultaneously, this kind metal cap can play the fixedly effect of priming again, so be commonly called as strengthening cap.Particularly, the effect of strengthening cap in detonator, the one, the sealing charging explosive in detonator makes that powder charge is unlikely spills, and reduces the influence of extraneous factor to powder charge; The 2nd, stop primary explosive column upper strata explosion product to disperse to medicine groove top and side direction, thus the growth of pressure when quickening the priming burning, and then accelerate it from the conversion of burning to detonation.
Fig. 1 is the axial section of traditional strengthening cap.This kind strengthening cap 101 comprise medicine groove 106, with medicine groove 106 on be positioned at the flash hole 103 in 109 centres, medicine groove top.Wherein, the axial section of medicine groove 106 is inverted U-shaped, and flash hole 103 is cylindrical.Referring to Fig. 6, the operation principle of this kind strengthening cap 101 when detonator is got angry can be described as: when igniter head 801 is got angry, firing energy will enter flash hole 103 by the upper port 104 of flash hole 103, enter the medicine groove 106 of strengthening cap 101 again by the lower port 102 of flash hole 103, and act on the priming 802 in the medicine groove 106.
As can be seen, there is following technological deficiency in traditional strengthening cap 101:
1. if the diameter of flash hole 103 is too small, in the time of then can causing igniter head 801 to be got angry, firing energy consumes the top surface 105 at strengthening cap 101 too much, and can't fully enter flash hole 103, and then cause firing energy can't fully enter the medicine groove 106 of strengthening cap 101, and then the priming 802 that can't fully ignite, finally reduce the reliability of detonating of detonator product, referring to Fig. 6.
2. if the diameter of flash hole 103 is excessive, then the detonator product external force such as is vibrated and is done the time spent in transportation or use, easily causes the priming 802 in the medicine groove 106 loose.Thereby, easily cause loose priming to leak by the flash hole 103 of strengthening cap 101, loose and the priming that leaks and the friction between strengthening cap 101 or the detonator shell 803 higher priming of susceptibility that easily ignites, and then cause accidental explosion incident in transportation or the use.In addition, flash hole 103 diameters are excessive, and the energy that also can cause detonating discharges by flash hole 103, can't effectively stop primary explosive column upper strata explosion product to disperse to medicine groove top 109 directions, thereby reduce the energy utilization ratio of detonating.
3. in addition, the wall of the medicine groove 106 that adopted of traditional strengthening cap 101 is thinner.The wall of medicine groove 106 is thin more, and on the one hand, the lateral restriction of the energy when 101 pairs of primings 802 of strengthening cap detonate is more little, thereby causes the energy effective utilization rate of detonating of priming 802 low more; On the other hand, under the certain condition of detonator shell internal diameter, the more thin meeting of the wall of medicine groove 106 causes the internal diameter of medicine groove 106 big more, thereby, for making booster explosive 804 obtain enough explosion velocity and momentum, the dosage that just needs to increase priming 802 is to obtain the priming powder column of enough axial heights, and this has just increased the production cost of detonator.
Disclose the strengthening cap that a kind of section is a H shape in the patent 200420048677.4, its cross-section structure is referring to Fig. 2.This H shape strengthening cap 201, the antagonism of cap body recoil when by reinforcement priming being burnt has reduced the dissipation of energy of priming burning, and then has improved the energy utilization ratio of detonating.But since its still adopt with traditional strengthening cap 101 in medicine groove 207, the flash hole 203 of constructed scheme, so still can't address the aforementioned drawbacks.
Summary of the invention
The purpose of this utility model is to solve the shortcoming that prior art exists, and provides a kind of and can strengthen initiating ability better, and can more effectively protect the not loose strengthening cap that leaks of priming.
In order to solve the problems of the technologies described above, the utility model adopts a kind of strengthening cap 301 with compound flash hole 320, this compound flash hole 320 comprise cylindrical flash hole 308, with taper flash hole 303.This cylindrical flash hole 308 links to each other with the centre at the medicine groove top 319 of strengthening cap 301, this taper flash hole 303 is positioned at the end of cylindrical flash hole 308 away from medicine groove 307, and the less port 306 of the diameter of taper flash hole 303 links to each other with cylindrical flash hole 308.Wherein, the axial section of medicine groove 307 is inverted U-shaped, referring to Fig. 3.
In addition, as the technical program on the other hand, the wall thickness of described medicine groove is not less than 0.8 millimeter.
The technical program realizes its technical purpose by following mechanism:
As Fig. 7, after igniter head 801 was got angry, firing energy acted on the priming 802 in the medicine groove by compound flash hole 320.Specifically, firing energy enters taper flash hole 303 by the bigger port 304 of taper flash hole 303 diameters, after the polymerization through taper flash hole 303, port 306 by taper flash hole 303 and cylindrical flash hole 308 joints enters cylindrical flash hole 308, through the energy transmission of cylindrical flash hole 308, the port 302 by cylindrical flash hole 308 and medicine groove joint acts on the priming 802 in the medicine groove.
The beneficial effect of the relative prior art of the technical solution of the utility model is:
1. the compound flash hole 320 that adopts of the utility model, enter the inlet of strengthening cap 301 as firing energy with the bigger port 304 of taper flash hole 303 diameters, compare as the inlet of firing energy with the upper port 104 of flash hole 103 with traditional strengthening cap 101, strengthening cap 301 of the present utility model has increased the diameter of firing energy inlet, make firing energy be entered strengthening cap 301 fully and the priming 802 that ignites, improved the reliability that the detonator product detonates, referring to Fig. 7 and Fig. 6.
2. firing energy enters strengthening cap 301 backs earlier through taper flash hole 303,303 pairs of firing energies of taper flash hole are collected and polymerization, make firing energy more enter cylindrical flash hole 308 in the concentrated area, further guaranteed the ignite reliability of priming 802 of firing energy.
3. the design feature of taper flash hole 303 and cumulative mechanism, determined the diameter of taper flash hole 303 with the port 306 of cylindrical flash hole 308 joints, it also is the diameter of the port 302 of cylindrical flash hole 308 and medicine groove joint, can obtain very little, and don't can influence the effect of firing energy to priming 802, can assemble firing energy better on the contrary.
4. the cylindrical flash hole 308 and the diameter of the port 302 of medicine groove joint are obtained very little, help protecting priming 802 under external force effects such as vibration, be difficult for loose, leak, can effectively improve the security of detonator product in transportation and use.
5. obtain the cylindrical flash hole 308 and the diameter of the port 302 of medicine groove joint very little, the energy that produces in the time of can also reducing priming 802 burnings discharges by above-mentioned port 302, can effectively stop primary explosive column upper strata explosion product to disperse, thereby improve the energy utilization ratio of detonating to medicine groove top 319 directions.
6. compare with the thick size of the medicine cell wall of traditional strengthening cap, the technical solution of the utility model obtains the wall thickness of medicine groove 307 and is not less than 0.8 millimeter, strengthen the lateral restriction of the energy that produces when 301 pairs of primings 802 of strengthening cap detonate, thereby improved the effective rate of utilization of the energy that detonates; Meanwhile, at present No. eight comparatively general detonators, under the certain condition of its detonator shell internal diameter, be equivalent to increase the internal diameter of medicine groove 307, thereby, for the dosage that makes booster explosive 804 obtain the priming of enough explosion velocities and momentum is reduced, that is, the explosive quantity required for the primary explosive column that obtains enough axial heights reduced, and this has just reduced the production cost of detonator.
A kind of preferred version of the present utility model is: described compound flash hole 320 can be taken as below 1.7 millimeters with the diameter of the port 302 of medicine groove 307 joints, is the best with 1.0～1.5 millimeters.This has just guaranteed the effect that strengthening cap 301 can play the protection priming preferably and strengthen initiating ability.Take all factors into consideration processing technology, precision and the action effect thereof of strengthening cap, the diameter of above-mentioned port 302 is taken as 1.0～1.5 millimeters, both made things convenient for processing and manufacturing, guaranteed the action effect that strengthening cap 301 is good again.
Another kind of preferred version of the present utility model is: the length of described cylindrical flash hole can be taken as 0～3.0 millimeter, is the best to approach 0 millimeter.
Among Fig. 3, the length of cylindrical flash hole 308 is more little, and the compound flash hole 320 that strengthening cap 301 under equal conditions can be got is more little with the value of the diameter of the port 302 of medicine groove 307 joints.That is the length of cylindrical flash hole 308 is more little, and the axial depth that is equivalent to taper flash hole 303 is further extended.Strengthening cap 301 for same size, under the situation that tapering at taper flash hole 303 is identical, the degree of depth of the medicine groove 307 of strengthening cap 301 is identical, when the length of cylindrical flash hole 308 is taken as 0 millimeter, can obtain the minimum of a value of compound flash hole 320 and the diameter of the port 302 of medicine groove 307 joints, this is the strengthening cap 401 shown in Fig. 4.The compound flash hole 420 of this strengthening cap 401 is made of taper flash hole 403, and above-mentioned cylindrical flash hole 308 shows as the joint port 408 of the medicine groove 307 of taper flash hole 403 and strengthening cap 401 herein.Such technical scheme has guaranteed that strengthening cap 401 can play reinforcement initiating ability, the not loose effect that leaks of protection priming better.Take all factors into consideration processing technology, precision and the action effect thereof of strengthening cap, the length of the cylindrical flash hole 308 shown in Fig. 3 obtained approach 0 millimeter, both relaxed the requirement to process for machining and manufacturing, and guaranteed the action effect that strengthening cap is good again, this is the preferred version of the technical program.
Another preferred version of the present utility model is: the outer rim of the bottom of described strengthening cap 501, medicine notch 518 has chamfering 310, as Fig. 5.Described chamfering 310 can be taken as 40 °～50 °.For the convenience of processing and fabricating, this chamfering is the best with 45 °.This has just made things convenient for the assembly process of strengthening cap 501 in the production process.Employing has the strengthening cap 501 of chamfering 310, on the one hand, can omit the enlarging link in the traditional mode of production operation, on the other hand, and can be more accurate, successfully strengthening cap 501 is buckled in the detonator shell.
The utility model also has a kind of preferred version to be: the wall thickness of the inverted U-shaped section medicine groove of described strengthening cap can be taken as 0.8～1.5 millimeter; The interior diameter of the inverted U-shaped section medicine groove of described strengthening cap can be taken as 3.4～4.8 millimeters.Its benefit is: form at same priming, under the situation of same degree of packing, under the energy that detonates of the required minimum of booster explosive, the priming explosive payload of this programme is able to minimized.Because priming is leaded, its minimized filling just can alleviate environmental pollution.
In addition, the wall thickness of the medicine groove of traditional strengthening cap is usually less than 0.5 millimeter, and the medicine groove of wall thickness is made under the material equal when being subjected to external force collision like this, and for wall thicker in the strengthening cap of the present utility model, the ability of protection priming is just more weak.Especially, thicker wall in the strengthening cap of the present utility model can also more effectively stop primary explosive column upper strata explosion product to disperse to side.
At No. eight comparatively general detonators, the technical solution of the utility model adopts the thicker medicine cell wall of more traditional strengthening cap that is suitable for it, adopt the bigger medicine groove internal diameter of more traditional strengthening cap simultaneously, its beneficial effect is: on the one hand, increased the powder column height of priming in the inverted U-shaped section medicine groove, be axial length, help priming and obtain enough explosion velocities and momentum, help the detonation developmental process of booster explosive; On the other hand, also help strengthening the influence of priming opposing external force collision.
Another preferred version of the present utility model is that the diameter of the big opening part of taper flash hole equals the external diameter of described detonator with strengthening cap, referring to Fig. 5.The diameter that this has just further enlarged big opening part port on the taper flash hole 503 makes it identical with the external diameter of strengthening cap 501, that is, make the area of top surface 505 of strengthening cap 501 get minimum limiting value.Such technical scheme has farthest reduced the consumption of firing energy at the top surface 505 of strengthening cap 501, enters strengthening cap 501 with having guaranteed the firing energy fullest, helps improving the utilization rate of firing energy, improves the ignition reliability of detonator.
Description of drawings
Fig. 1 is the axial section of traditional inverted U-shaped section strengthening cap;
Fig. 2 is the axial section of H shape section strengthening cap;
Fig. 3 is the profile that the utlity model has the strengthening cap of taper flash hole;
Fig. 4 is taken as a kind of embodiment of 0 millimeter limiting case for cylindrical flash hole length in the utility model;
A kind of embodiment that Fig. 5 has chamfering and wall thickness, the internal diameter of this medicine groove made improvements for the utility model Chinese medicine notch outer rim;
Fig. 6 is the axial section of traditional detonator structure;
Fig. 7 is the axial section of detonator structure described in the utility model.
Fig. 8 is the axial section of the detonator structure described in the utility model of the novel loading method production of employing.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 3 is the axial section that the utlity model has the strengthening cap 301 of compound flash hole 320.This strengthening cap 301 comprises inverted U-shaped section medicine groove 307 and compound flash hole 320.Wherein, compound flash hole 320 comprises cylindrical flash hole 308 and taper flash hole 303.
Detonator shell with 6.4 millimeters of internal diameters, 73 millimeters of pipe ranges is an example.Embodiment shown in Figure 3 is taken as 1.4 millimeters with the diameter of the cylindrical flash hole 308 of strengthening cap 301, the diameter of the joint 306 of this diameter that is taper flash hole 303 and cylindrical flash hole 308, that is the diameter of the joint 302 of cylindrical flash hole 308 and medicine groove 307.The diameter of the port 304 that taper flash hole 303 diameters are bigger is taken as 5.3 millimeters.In the present embodiment, the length of cylindrical flash hole 308 is taken as 2 millimeters, and the wall thickness of medicine groove 307 is taken as 0.8 millimeter, and its internal diameter is taken as 4.8 millimeters.
Fig. 4 is the further improvement to embodiment among Fig. 3.The strengthening cap 401 of embodiment shown in Fig. 4, the length of the cylindrical flash hole 308 of strengthening cap among Fig. 3 301 is taken as 0 millimeter of limiting value, thereby, cylindrical flash hole shows as the port 408 of medicine groove 307 joints of taper flash hole 403 and strengthening cap 401 in the strengthening cap 401 in Fig. 4, be equivalent to the less end of taper flash hole 403 diameters and directly link to each other with the medicine groove 307 of strengthening cap 401.Under the other technologies feature situation identical with embodiment shown in Figure 3, the taper flash hole 403 in the present embodiment can be got 1.2 millimeters with the diameter of the port 408 of medicine groove 307 joints of strengthening cap 401.Such technical scheme helps further dwindling the diameter of the cylindrical flash hole 308 of strengthening cap 301 among Fig. 3.In actual production, be difficult to the length of the cylindrical flash hole 308 of strengthening cap among Fig. 3 301 is made 0 millimeter, so for production and processing just, the length of this cylindrical flash hole 308 can be taken as and approach 0 millimeter, be the best with 0.2～1 millimeter.
Embodiment among Fig. 5 is the improvement on the embodiment basis in Fig. 4.Axial length with cylindrical flash hole 508 in this embodiment is taken as 0.3 millimeter.The chamfering 310 of strengthening cap 501 bottoms, medicine notch 518 outer rims is taken as 45 °.In detonator is produced, need in detonator shell, to pack into strengthening cap.Owing to require strengthening cap external diameter and shell internal diameter to make tight fit, therefore,, then must elder generation before this assembly process the oral area of detonator shell be enlarged slightly so that the packing into of strengthening cap if there is not this chamfering 310.And present embodiment is after the outer rim of medicine notch 518 is got chamfering 310, the less strengthening cap bottom of the external diameter of more whole strengthening cap 501 can enter detonator shell 803 smoothly and need not enlarging, saved production process, and can more accurately strengthening cap 501 be seated, referring to Fig. 8.
In addition, the strengthening cap 501 among Fig. 5 further enlarges the diameter of the bigger port 304 of taper flash hole 503 diameters on the basis of strengthening cap 401 shown in Figure 4, make it identical with the external diameter of strengthening cap 501.Embodiment also is taken as 1.4 millimeters with the wall thickness of medicine groove 507 among Fig. 5, and its internal diameter is taken as 3.6 millimeters, thereby has played the effect that the protection priming is not influenced by external force better.
Application number is in 200810084639.7 the patent of invention " a kind of detonator fire tube produce in the method for powder charge ", a kind of loading method of detonator fire tube is disclosed, its core is that the method that breaks away from detonator shell, independently suppresses is adopted in the compacting of priming in strengthening cap.Its biggest advantage is: adopt in the detonator fire tube of this kind loading method production; all primings only contact with strengthening cap medicine groove inwall; referring to Fig. 8, such detonator fire tube structure makes all primings 802 all be subjected to the duplicate protection of detonator shell 803 and strengthening cap medicine cell wall.The disclosed strengthening cap structure of this loading method and the utility model is combined, and littler flash hole diameter and thicker medicine cell wall just can be brought into play both advantages better, guarantee that farthest priming is not subjected to the influence of external force effect.
Claims (10)
1. detonator strengthening cap, its medicine grooved profile is inverted U-shaped, it is characterized in that:
Comprise described medicine groove and be positioned at the flash hole at described medicine groove top center position;
Described medicine cell wall is thick to be not less than 0.8 millimeter; Perhaps,
Described flash hole is compound flash hole, comprise cylindrical flash hole, with the taper flash hole;
Described cylindrical flash hole links to each other with described medicine groove top center position, and described taper flash hole is at the end of described cylindrical flash hole away from described medicine groove, and the less end of described taper flash hole diameter links to each other with described cylindrical flash hole.
2. according to the described detonator strengthening cap of claim 1, it is characterized in that:
The diameter of the port of described compound flash hole and medicine groove joint is less than 1.7 millimeters.
3. according to claim 1 or 2 described detonator strengthening caps, it is characterized in that:
The diameter of the port of described compound flash hole and medicine groove joint is 1.0～1.5 millimeters.
4. according to the described detonator strengthening cap of claim 1, it is characterized in that:
The axial length of described cylindrical flash hole is 0.2～3.0 millimeter.
5. according to the described detonator strengthening cap of claim 1, it is characterized in that:
The axial length of described cylindrical flash hole approaches 0 millimeter.
6. according to claim 1 or 2 described detonator strengthening caps, it is characterized in that:
The outer rim of described medicine notch has chamfering.
7. according to the described detonator strengthening cap of claim 3, it is characterized in that:
The outer rim of described medicine notch has chamfering.
8. according to the described detonator strengthening cap of claim 6, it is characterized in that:
Described chamfering is 40 °～50 °.
9. according to claim 1,2 or 8 described detonator strengthening caps, it is characterized in that:
The wall thickness of described medicine groove is 0.8～1.5 millimeter, 3.4～4.8 millimeters of the interior diameters of described medicine groove.
10. according to claim 1,2,4,5 or 8 described detonator strengthening caps, it is characterized in that:
The diameter of the big opening part of described taper flash hole equals the external diameter of described detonator with strengthening cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201112729U CN201229150Y (en) | 2008-04-28 | 2008-04-28 | Reinforced cap for detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201112729U CN201229150Y (en) | 2008-04-28 | 2008-04-28 | Reinforced cap for detonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229150Y true CN201229150Y (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201112729U Expired - Lifetime CN201229150Y (en) | 2008-04-28 | 2008-04-28 | Reinforced cap for detonator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201229150Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104649853A (en) * | 2013-11-20 | 2015-05-27 | 湖北卫东化工股份有限公司 | Safe detonator |
| CN113945125A (en) * | 2021-09-16 | 2022-01-18 | 南京理工大学 | Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine |
-
2008
- 2008-04-28 CN CNU2008201112729U patent/CN201229150Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104649853A (en) * | 2013-11-20 | 2015-05-27 | 湖北卫东化工股份有限公司 | Safe detonator |
| CN104649853B (en) * | 2013-11-20 | 2020-06-30 | 湖北卫东化工股份有限公司 | Safety detonator |
| CN113945125A (en) * | 2021-09-16 | 2022-01-18 | 南京理工大学 | Reinforced cap for preventing thick shell explosive element from accidentally loosing its internal medicine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100085 Beijing city Haidian District East Road No. 1 Yingchuang power block A Room 601 Patentee after: Beijing Ebtech Co., Ltd. Address before: 100098 Hua Jie building, No. 13, Zhong Zhong Temple, Beijing, Haidian District, 11B12 Patentee before: Beijing Ebtech Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Beijing Ebtech Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Yang Chun Document name: Notification of Passing Examination on Formalities |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100097 Beijing city Haidian District road Jin Yuan era business center A block 11F Patentee after: Beijing Ebtech Co., Ltd. Address before: 100085 Beijing city Haidian District East Road No. 1 Yingchuang power block A Room 601 Patentee before: Beijing Ebtech Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20090429 |
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| CX01 | Expiry of patent term |