阅读说明：本技术 一种热电偶固定装置及方法 (Thermocouple fixing device and method ) 是由 张美杰 和奔流 陈建立 李建军 刘峰 祝永红 王丽艳 张军丽 杨倩 张建林 张燕 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种热电偶固定装置及方法,属于冶金生产技术领域,解决了现有技术中热电偶与反应器不能有效接触时,导致的温度测量误差大的问题,本发明包括一端固定于还原炉外壁的外套管、一端穿过还原炉的外壁且与反应器外壁接触的热电偶,所述外套管内部中空且在远离还原炉的一端设置有通孔,所述热电偶贯穿该通孔与外套管套接在一起,热电偶与外套管内壁之间还设置有弹簧组,弹簧组的一端热电偶固定连接,另一端与外套管固定连接,使热电偶受到靠近反应器方向上的压力,其目的在于,能够实现热电偶与反应器可靠接触,且不受冷却风影响的热电偶固定装置及方法。(The invention discloses a thermocouple fixing device and a thermocouple fixing method, belongs to the technical field of metallurgical production, and solves the problems that when a thermocouple and a reactor cannot be effectively contacted, the invention comprises an outer sleeve with one end fixed on the outer wall of the reduction furnace, a thermocouple with one end passing through the outer wall of the reduction furnace and contacting with the outer wall of the reactor, the inner part of the outer sleeve is hollow, a through hole is arranged at one end far away from the reduction furnace, the thermocouple penetrates through the through hole and is sleeved with the outer sleeve, a spring group is also arranged between the thermocouple and the inner wall of the outer sleeve, one end of the spring group is fixedly connected with the thermocouple, the other end of the spring group is fixedly connected with the outer sleeve, so that the thermocouple is pressed in the direction close to the reactor, the thermocouple fixing device and the thermocouple fixing method aim at realizing reliable contact between a thermocouple and a reactor and are not influenced by cooling air.)

1. The utility model provides a thermocouple fixing device, its characterized in that, includes outer tube (3) that one end is fixed in reduction furnace (1) outer wall, thermocouple (4) that one end passed the outer wall of reduction furnace (1) and contacted with reactor (2) outer wall, the inside cavity of outer tube (3) and be provided with through-hole (5) in the one end of keeping away from reduction furnace (1), thermocouple (4) run through this through-hole (5) and outer tube (3) cup joint together, still are provided with spring assembly (6) between thermocouple (4) and outer tube (3) inner wall, and one end thermocouple (4) fixed connection of spring assembly (6), the other end and outer tube (3) fixed connection make thermocouple (4) receive the pressure of being close to reactor (2) orientation.

2. The thermocouple fixing device and the method according to claim 1, wherein the thermocouple (4) comprises a probe (7) and a connecting rod (8), the probe (7) is in contact with the outer wall of the reactor (2), a baffle plate (9) is further arranged on the connecting rod (8), one end of the spring set (6) is fixedly connected with the baffle plate (9), and the other end of the spring set is fixedly connected with the inner side of the end part, far away from the reduction furnace (1), of the outer sleeve (3).

3. A thermocouple fixing device according to claim 1, characterised in that the outer sleeve (3) comprises a socket (10) and a cap (11), the socket (10) being fixed to the reduction furnace (1), the cap (11) being detachably connected to the end of the socket (10).

4. The thermocouple fixing device according to claim 1, further comprising an inner sleeve (12), wherein the inner sleeve (12) is sleeved on the thermocouple (4) and is located inside the outer sleeve (3), and one end of the inner sleeve (12) close to the reactor (2) is arc-shaped, and the arc degree is matched with the arc degree of the outer wall of the reactor (2).

5. A thermocouple fixing device according to claim 4, characterized in that the spring group (6) comprises an inner spring (13) and an outer spring (14), one end of the outer spring (14) is connected with the inner side of the end part of the cap (11) far away from the reduction furnace (1), the other end of the outer spring is fixedly connected with the outer side of the end part of the inner sleeve (12) far away from the reduction furnace (1), one end of the inner spring (13) is fixedly connected with the inner side of the end part of the inner sleeve (12) far away from the reduction furnace (1), and the other end of the inner spring is fixedly connected with the baffle (9) on the connecting rod (8).

6. A thermocouple fixation device according to claim 4, characterised in that the inner sleeve (12) is made of a ceramic material.

7. A thermocouple fixation device according to claim 4, characterised in that the inner diameter of the inner sleeve (12) is 5-50mm larger than the outer diameter of the thermocouple (4).

8. Thermocouple fixation device according to claim 4, characterised in that the hardness of the inner spring (13) is less than the hardness of the outer spring (14).

9. A thermocouple (4) fixing method is characterized by comprising the following steps:

step 1: a mounting hole for mounting the inner sleeve (12) is reserved on the outer wall of the reducing furnace (1);

step 2: fixedly connecting the sleeve seat (10) to a mounting hole on the outer wall of the reduction furnace (1);

and step 3: the spring assembly (6), the thermocouple (4) and the inner sleeve are assembled into a whole and are arranged in the mounting hole, so that a probe (7) of the thermocouple (4) is in contact with the outer wall of the reactor (2);

and 4, step 4: the sleeve cap (11) is fixedly connected with the sleeve seat (10), so that the sleeve cap (11) supplies inward pressure to the outer spring (14), the inner sleeve is tightly attached to the outer wall of the reactor (2), the inner spring (13) supplies inward pressure to the thermocouple (4), and the probe (7) is tightly contacted with the outer wall of the reactor (2).

Technical Field

The invention belongs to the technical field of metallurgical production, and particularly relates to a thermocouple fixing device and method.

Background

The magnesium thermal method for producing the titanium sponge is that magnesium and titanium tetrachloride are subjected to reduction reaction in a reactor to generate a large amount of heat, if the heat is not discharged in time, the titanium sponge is sintered, the distillation effect is influenced, the content of impurities such as chlorine exceeds the standard, and the grade of the titanium sponge is reduced. At present, the temperature of a reactor is measured mainly by direct contact between a thermocouple and the reactor, but poor contact exists in the production process, so that the temperature is not accurately measured, and in addition, in a furnace with a forced heat dissipation function, the heat of a thermocouple probe can be taken away by blowing air by a fan, so that the measured temperature of the reactor is low, the heat in the reactor cannot be timely discharged out of the system, the temperature of a reaction liquid level is high, and the titanium sponge is sintered.

Disclosure of Invention

In order to solve the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a thermocouple fixing apparatus and method, which can achieve reliable contact between a thermocouple and a reactor and is not affected by cooling air.

The technical scheme adopted by the invention is as follows:

a thermocouple fixing device comprises an outer sleeve with one end fixed on the outer wall of a reduction furnace and a thermocouple with one end penetrating through the outer wall of the reduction furnace and contacting with the outer wall of a reactor, wherein the outer sleeve is hollow inside and is provided with a through hole at one end far away from the reduction furnace, the thermocouple penetrates through the through hole and is sleeved with the outer sleeve, a spring group is further arranged between the thermocouple and the inner wall of the outer sleeve, one end of the spring group is fixedly connected with the thermocouple, and the other end of the spring group is fixedly connected with the outer sleeve, so that the thermocouple is pressed in the direction close to the reactor.

By adopting the technical scheme, the outer sleeve is fixed on the outer wall of the reduction furnace, one end of the spring group is in contact with the outer sleeve, the other end of the spring group is fixed on the thermocouple, the contact between the thermocouple and the reactor is more reliable through the elasticity of the spring group at the normal temperature outside the reduction furnace, and the problem of large temperature measurement error caused by the fact that the thermocouple cannot be effectively contacted with the outer wall of the reactor is solved.

Furthermore, the thermocouple comprises a detecting head and a connecting rod, the detecting head is in contact with the outer wall of the reactor, a baffle is further arranged on the connecting rod, one end of a spring group is fixedly connected with the baffle, the other end of the spring group is fixedly connected with the inner side of the end part of the outer sleeve far away from the reduction furnace, the spring group acts on the baffle, pressure close to the direction of the reactor is applied to the connecting rod, and the detecting head is in close contact with the outer wall of the reactor.

Furthermore, in consideration of the installation and the disassembly of the fixing device, the outer sleeve comprises a sleeve seat and a sleeve cap, the sleeve seat is fixed on the reduction furnace, the sleeve cap is detachably connected to the end part of the sleeve seat, and the sleeve seat and the sleeve cap can be connected in a buckling mode or a threaded mode.

Further, still include interior sleeve pipe, interior sleeve pipe adopts ceramic material to make, interior sleeve pipe cover is established on the thermocouple and is located the inside of outer tube, and interior sleeve pipe is close to reactor one end and is the arc, radian and reactor outer wall radian phase-match, prevent that interior sleeve pipe and reactor from leaving the gap, the influence separates the temperature effect, ceramic material separates the thermal-insulated effectual of separating the temperature, the protection thermocouple probe avoids external environment's influence, can be more accurate measure the inside temperature of reactor, solve the cooling process in, the disturbance that the air current caused the thermocouple probe, lead to temperature measurement error's problem.

Furthermore, before the sleeve cap is not installed, the thermocouple probe is positioned at the outer side of the arc-shaped end of the ceramic sleeve under a normal state, so that the deformation space of the spring is ensured, and the spring is in close contact with the outer wall of the reactor.

Furthermore, the concrete implementation structure for realizing the tight contact between the ceramic sleeve and the thermocouple and the outer wall of the reactor is realized, the spring set comprises an inner spring and an outer spring, one end of the outer spring is connected with the inner side of the end part of the reduction furnace far away from the sleeve cap, the other end of the outer spring is fixedly connected with the outer side of the end part of the reduction furnace far away from the inner sleeve, one end of the inner spring is fixedly connected with the inner side of the end part of the reduction furnace far away from the inner sleeve, the other end of the inner spring is fixedly connected with a baffle on the connecting rod, and the sleeve cap transmits pressure to the ceramic sleeve and the thermocouple through the two springs so as to be in tight contact with the reactor, so that the thermocouple and the reactor are reliably contacted.

Preferably, the inner diameter of the inner sleeve is 5-50mm larger than the outer diameter of the thermocouple, so that enough heat buffering space is ensured in the cooling process.

Preferably, the hardness of the inner spring is less than that of the outer spring, so that the thermocouple and the ceramic sleeve are ensured to be in good contact with the outer wall of the reactor under the action of the springs, and poor contact caused by temperature change is avoided.

A thermocouple fixing method comprises the following steps:

step 1: a mounting hole for mounting the inner sleeve is reserved on the outer wall of the reducing furnace;

step 2: fixedly connecting the sleeve seat to a mounting hole on the outer wall of the reducing furnace;

and step 3: the spring assembly, the thermocouple and the inner sleeve are assembled into a whole and are arranged in the mounting hole, so that a probe head of the thermocouple is contacted with the outer wall of the reactor;

and 4, step 4: fixedly connecting the sleeve cap with the sleeve seat, enabling the sleeve cap to apply inward pressure to the outer spring, enabling the inner sleeve to be tightly attached to the outer wall of the reactor, and enabling the inner spring to apply inward pressure to the thermocouple, so that the probe is tightly contacted with the outer wall of the reactor;

and 5: and (4) disassembling, namely disassembling and separating the sleeve cap, the thermocouple and the inner sleeve from the reactor in sequence.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the outer sleeve is fixed on the outer wall of the reduction furnace, one end of the spring set is in contact with the outer sleeve, the other end of the spring set is fixed on the thermocouple, and the spring set acts on the baffle plate to apply pressure to the connecting rod in the direction close to the reactor outside the reduction furnace at normal temperature, so that the probe is reliably contacted with the outer wall of the reactor, and temperature measurement errors caused by poor contact are avoided.

2. Through setting up ceramic material's interior sleeve pipe, and it is close to reactor one end and is the arc, radian and reactor outer wall radian phase-match, prevent that interior sleeve pipe and reactor from leaving the gap, form the separation space to the thermocouple, protect thermocouple probe to avoid external environment's influence, can be more accurate measure the inside temperature of reactor, in the cooling process, the sleeve pipe protection thermocouple avoids outside air current disturbance, it is more accurate to make the thermocouple measure, can truly reflect out reactor outer wall temperature, and then more accurate control cooling time, outside the discharge system of the timely capacity of extra heat that will reduction reaction produce, avoid reactor center heat to gather, lead to the middle part overtemperature, and then promote the density and the quality of sponge titanium.

3. The elasticity of the device is controlled outside the reduction reaction furnace and is in a normal temperature state, so that the reliability of the fixing device is ensured.

4. The inner diameter of the ceramic bushing is 5-50mm larger than the outer diameter of the thermocouple, so that enough thermal buffer space is ensured in the cooling process.

5. The thermocouple fixing method provided by the invention is simple to operate, convenient to disassemble and assemble and high in practicability.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a thermocouple installation apparatus and method according to the present invention;

FIG. 2 is a schematic view of the structure of a thermocouple according to the present invention;

FIG. 3 is a schematic view of the construction of the cap of the present invention;

fig. 4 is a schematic structural view of the socket of the present invention.

Reference numerals

1-reduction furnace, 2-reactor, 3-outer sleeve, 4-thermocouple, 5-through hole, 6-spring group, 7-probe, 8-connecting rod, 9-baffle, 10-sleeve seat, 11-sleeve cap, 12-inner sleeve, 13-inner spring and 14-outer spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail with reference to fig. 1 to 4.

A thermocouple fixing device comprises an outer sleeve 3 and a thermocouple 4, wherein one end of the outer sleeve 3 is fixed on the outer wall of a reduction furnace 1, one end of the thermocouple 4 penetrates through the outer wall of the reduction furnace 1 and is in contact with the outer wall of a reactor 2, the inner part of the outer sleeve 3 is hollow, a through hole 5 is formed in one end, far away from the reduction furnace 1, of the outer sleeve, the thermocouple 4 penetrates through the through hole 5 and is connected with the outer sleeve 3 in a sleeved mode, a spring group 6 is further arranged between the thermocouple 4 and the inner wall of the outer sleeve 3, one end of the spring group 6 is fixedly connected with the thermocouple 4, the other end of the spring group is fixedly connected with the outer sleeve 3, and the thermocouple 4 is enabled to bear pressure in the direction close to the reactor 2; in the state of normal temperature outside the reduction furnace 1, the spring group 6 acts on the thermocouple 4 to apply pressure to the thermocouple 4 in the direction close to the reactor 2, the contact between the thermocouple 4 and the reactor 2 is more reliable through the elasticity of the spring group 6, and the problem of large temperature measurement error caused by the fact that the thermocouple 4 cannot effectively contact with the outer wall of the reactor 2 is solved.

Further, realize thermocouple 4 and the concrete structure of realizing that the outer wall of reactor 2 compresses tightly, thermocouple 4 includes detecting head 7 and connecting rod 8, detecting head 7 and the contact of 2 outer walls of reactor still are provided with baffle 9 on the connecting rod 8, the one end and the baffle 9 fixed connection of spring assembly 6, the other end and outer tube 3 keep away from 1 tip inboard fixed connection of reducing furnace, spring assembly 6 acts on baffle 9, exerts the pressure that is close to 2 directions of reactor to connecting rod 8, makes detecting head 7 and the outer wall of reactor 2 in close contact with.

Furthermore, in consideration of facilitating the installation and the disassembly of the fixing device, the outer sleeve 3 is split, and specifically comprises a sleeve seat 10 and a sleeve cap 11, wherein the sleeve seat 10 is fixed on the reduction furnace 1, the sleeve cap 11 is detachably connected to the end part of the sleeve seat 10, and the sleeve seat 10 and the sleeve cap 11 can be detachably connected in a buckling connection mode or a threaded connection mode; in the disassembly process, the thermocouple 4 of the inner sleeve can be disassembled only after the sleeve cap 11 is disassembled from the sleeve seat 10.

Further, in order to promote the effect of interior sleeve pipe 12 to the heat preservation effect of thermocouple 4 and prevent the disturbance that the air current caused to thermocouple 4 probe, interior sleeve pipe 12 adopts the material that thermal-insulated thermal insulation performance is good, preferably ceramic material, interior sleeve pipe 12 cover is established on thermocouple 4 and is located the inside of outer tube 3, and interior sleeve pipe 12 is close to 2 one ends of reactor and is the arc, radian and 2 outer wall radians phase-matches of reactor, prevent that interior sleeve pipe 12 and reactor 2 from leaving the gap, influence thermal insulation effect, ceramic material's thermal insulation effect that separates is good, the influence of external environment is avoided to protection thermocouple 4 probe, can be more accurate measure the inside temperature of reactor 2, solve in the cooling process, the air current leads to the disturbance that thermocouple 4 probe caused, leads to temperature measurement error's problem.

Further, before the sleeve cap 11 is not installed, in a normal state, the probe of the thermocouple 4 is positioned at the outer side of the arc-shaped end of the ceramic sleeve, so that the deformation space of the spring is ensured, and the spring is in close contact with the outer wall of the reactor 2.

Further, a concrete implementation structure that both the ceramic bushing and the thermocouple 4 can be in close contact with the outer wall of the reactor 2 is realized, the spring set 6 comprises an inner spring 13 and an outer spring 14, one end of the outer spring 14 is connected with the inner side of the end part, far away from the reduction furnace 1, of the sleeve cap 11, the other end of the outer spring is fixedly connected with the outer side of the end part, far away from the reduction furnace 1, of the inner bushing 12, one end of the inner spring 13 is fixedly connected with the inner side of the end part, far away from the reduction furnace 1, of the inner bushing 12, the other end of the inner spring is fixedly connected with the baffle 9 on the connecting rod 8, and the sleeve cap 11 transmits pressure to the ceramic bushing and the thermocouple 4 through the two springs to enable the ceramic bushing and the thermocouple 4 to be in close contact with the reactor 2, so that the thermocouple 4 and the reactor 2 are in reliable contact.

Preferably, the inner diameter of the inner sleeve 12 is 5-50mm larger than the outer diameter of the thermocouple 4, so that a gap is left between the inner sleeve 12 and the thermocouple 4, and a sufficient thermal buffering space is ensured in the cooling process.

Preferably, the hardness of the inner spring 13 is less than that of the outer spring 14, so that the thermocouple 4 and the ceramic bushing are ensured to be in good contact with the outer wall of the reactor 2 under the action of the springs, and poor contact caused by temperature change is avoided.

A thermocouple 4 fixing method comprises the following steps:

step 1: a mounting hole for mounting the inner sleeve 12 is reserved on the outer wall of the reducing furnace 1;

step 2: fixedly connecting the sleeve seat 10 to a mounting hole on the outer wall of the reducing furnace 1;

and step 3: the spring assembly 6, the thermocouple 4 and the inner sleeve are assembled into a whole and are arranged in the mounting hole, so that a probe head 7 of the thermocouple 4 is contacted with the outer wall of the reactor 2;

and 4, step 4: fixedly connecting the sleeve cap 11 with the sleeve seat 10, enabling the sleeve cap 11 to supply inward pressure to the outer spring 14, enabling the inner sleeve to be tightly attached to the outer wall of the reactor 2, and enabling the inner spring 13 to supply inward pressure to the thermocouple 4, so that the probe 7 is tightly contacted with the outer wall of the reactor 2;

and 5: and (4) disassembling, namely disassembling the sleeve cap 11, the thermocouple 4 and the inner sleeve from the reactor 2 in sequence.

When the device is used, after a reduction reactor 2 is placed in a reduction furnace 1, a ceramic sleeve and a thermocouple 4 are fed into the furnace through a sleeve on the reduction furnace 1 and are in contact with the reactor 2, then a sleeve cap 11 is connected with a sleeve seat 10 on the outer wall of the furnace in a buckling or threaded connection mode, the bottom of the sleeve cap 11 transmits pressure to the ceramic sleeve through an outer spring 14 to enable the ceramic sleeve to be in close contact with the outer wall of the reactor 2, meanwhile, the thermocouple 4 receives inward pressure applied by an inner spring 13 to enable a probe 7 to abut against the outer wall of the reactor 2, and therefore the probe 7 of the thermocouple 4 is guaranteed to be in close contact with the reactor 2. The thermocouple 4 and the ceramic sleeve are in good contact with the outer wall of the reactor 2 through springs, and poor contact caused by temperature change can be avoided. When the temperature is higher than the set upper limit, the cooling fan is started, the temperature of the outer wall of the ceramic sleeve is only reduced by low-temperature airflow, but the position of the probe 7 of the thermocouple 4 is not influenced, the temperature of the outer wall of the reactor 2 can be truly reflected, the cooling time is controlled more accurately, extra heat generated by reduction reaction is timely and sufficiently discharged out of a system, and the phenomenon that the heat in the center of the reactor 2 is accumulated to cause the middle part to be over-heated and influence the density and the quality of the titanium sponge is avoided.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.